diff --git a/.gitignore b/.gitignore
index 0d18ab0bd..49d08ba71 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,6 @@
 favicon.*
-.htconfig.php
-.htpreconfig.php
+/.htconfig.php
+/.htpreconfig.php
 \#*
 *.log
 *.out
diff --git a/mod/admin.php b/mod/admin.php
index f8a75b7a2..7f8e12e0c 100644
--- a/mod/admin.php
+++ b/mod/admin.php
@@ -923,6 +923,10 @@ function admin_page_summary(App $a)
 		$showwarning = true;
 		$warningtext[] = L10n::t('The database update failed. Please run "php bin/console.php dbstructure update" from the command line and have a look at the errors that might appear.');
 	}
+	if (Config::get('system', 'update') == Update::FAILED) {
+		$showwarning = true;
+		$warningtext[] = L10n::t('The last update failed. Please run "php bin/console.php dbstructure update" from the command line and have a look at the errors that might appear. (Some of the errors are possibly inside the logfile.)');
+	}
 
 	$last_worker_call = Config::get('system', 'last_worker_execution', false);
 	if (!$last_worker_call) {
@@ -1087,7 +1091,9 @@ function admin_page_site_post(App $a)
 		update_table($a, "gcontact", ['connect', 'addr'], $old_host, $new_host);
 
 		// update config
-		Config::set('system', 'hostname', parse_url($new_url, PHP_URL_HOST));
+		$configFileSaver = new \Friendica\Util\Config\ConfigFileSaver($a->getBasePath());
+		$configFileSaver->addConfigValue('config', 'hostname', parse_url($new_url, PHP_URL_HOST));
+		$configFileSaver->saveToConfigFile();
 		Config::set('system', 'url', $new_url);
 		$a->setBaseURL($new_url);
 
@@ -1105,7 +1111,6 @@ function admin_page_site_post(App $a)
 	// end relocate
 
 	$sitename         = (!empty($_POST['sitename'])         ? Strings::escapeTags(trim($_POST['sitename']))      : '');
-	$hostname         = (!empty($_POST['hostname'])         ? Strings::escapeTags(trim($_POST['hostname']))      : '');
 	$sender_email     = (!empty($_POST['sender_email'])     ? Strings::escapeTags(trim($_POST['sender_email']))  : '');
 	$banner           = (!empty($_POST['banner'])           ? trim($_POST['banner'])                             : false);
 	$shortcut_icon    = (!empty($_POST['shortcut_icon'])    ? Strings::escapeTags(trim($_POST['shortcut_icon'])) : '');
@@ -1176,7 +1181,6 @@ function admin_page_site_post(App $a)
 	$itemcache_duration     = (!empty($_POST['itemcache_duration'])     ? intval($_POST['itemcache_duration'])            : 0);
 	$max_comments           = (!empty($_POST['max_comments'])           ? intval($_POST['max_comments'])                  : 0);
 	$temppath               = (!empty($_POST['temppath'])               ? Strings::escapeTags(trim($_POST['temppath']))   : '');
-	$basepath               = (!empty($_POST['basepath'])               ? Strings::escapeTags(trim($_POST['basepath']))   : '');
 	$singleuser             = (!empty($_POST['singleuser'])             ? Strings::escapeTags(trim($_POST['singleuser'])) : '');
 	$proxy_disabled         = !empty($_POST['proxy_disabled']);
 	$only_tag_search        = !empty($_POST['only_tag_search']);
@@ -1296,7 +1300,6 @@ function admin_page_site_post(App $a)
 	Config::set('system', 'poco_local_search'     , $poco_local_search);
 	Config::set('system', 'nodeinfo'              , $nodeinfo);
 	Config::set('config', 'sitename'              , $sitename);
-	Config::set('config', 'hostname'              , $hostname);
 	Config::set('config', 'sender_email'          , $sender_email);
 	Config::set('system', 'suppress_tags'         , $suppress_tags);
 	Config::set('system', 'shortcut_icon'         , $shortcut_icon);
@@ -1392,11 +1395,6 @@ function admin_page_site_post(App $a)
 
 	Config::set('system', 'temppath', $temppath);
 
-	if ($basepath != '') {
-		$basepath = BasePath::getRealPath($basepath);
-	}
-
-	Config::set('system', 'basepath'         , $basepath);
 	Config::set('system', 'proxy_disabled'   , $proxy_disabled);
 	Config::set('system', 'only_tag_search'  , $only_tag_search);
 
@@ -1536,9 +1534,6 @@ function admin_page_site(App $a)
 		"develop" => L10n::t("check the development version")
 	];
 
-	if (empty(Config::get('config', 'hostname'))) {
-		Config::set('config', 'hostname', $a->getHostName());
-	}
 	$diaspora_able = ($a->getURLPath() == "");
 
 	$optimize_max_tablesize = Config::get('system', 'optimize_max_tablesize', -1);
@@ -1597,7 +1592,6 @@ function admin_page_site(App $a)
 
 		// name, label, value, help string, extra data...
 		'$sitename'         => ['sitename', L10n::t("Site name"), Config::get('config', 'sitename'), ''],
-		'$hostname'         => ['hostname', L10n::t("Host name"), Config::get('config', 'hostname'), ""],
 		'$sender_email'     => ['sender_email', L10n::t("Sender Email"), Config::get('config', 'sender_email'), L10n::t("The email address your server shall use to send notification emails from."), "", "", "email"],
 		'$banner'           => ['banner', L10n::t("Banner/Logo"), $banner, ""],
 		'$shortcut_icon'    => ['shortcut_icon', L10n::t("Shortcut icon"), Config::get('system', 'shortcut_icon'), L10n::t("Link to an icon that will be used for browsers.")],
@@ -1675,7 +1669,6 @@ function admin_page_site(App $a)
 		'$itemcache_duration'     => ['itemcache_duration', L10n::t("Cache duration in seconds"), Config::get('system', 'itemcache_duration'), L10n::t("How long should the cache files be hold? Default value is 86400 seconds \x28One day\x29. To disable the item cache, set the value to -1.")],
 		'$max_comments'           => ['max_comments', L10n::t("Maximum numbers of comments per post"), Config::get('system', 'max_comments'), L10n::t("How much comments should be shown for each post? Default value is 100.")],
 		'$temppath'               => ['temppath', L10n::t("Temp path"), Config::get('system', 'temppath'), L10n::t("If you have a restricted system where the webserver can't access the system temp path, enter another path here.")],
-		'$basepath'               => ['basepath', L10n::t("Base path to installation"), Config::get('system', 'basepath'), L10n::t("If the system cannot detect the correct path to your installation, enter the correct path here. This setting should only be set if you are using a restricted system and symbolic links to your webroot.")],
 		'$proxy_disabled'         => ['proxy_disabled', L10n::t("Disable picture proxy"), Config::get('system', 'proxy_disabled'), L10n::t("The picture proxy increases performance and privacy. It shouldn't be used on systems with very low bandwidth.")],
 		'$only_tag_search'        => ['only_tag_search', L10n::t("Only search in tags"), Config::get('system', 'only_tag_search'), L10n::t("On large systems the text search can slow down the system extremely.")],
 
diff --git a/src/App.php b/src/App.php
index 4f55b558c..1ed6390b4 100644
--- a/src/App.php
+++ b/src/App.php
@@ -8,12 +8,12 @@ use Detection\MobileDetect;
 use DOMDocument;
 use DOMXPath;
 use Exception;
-use Friendica\Core\Config\Cache\ConfigCacheLoader;
 use Friendica\Core\Config\Cache\IConfigCache;
 use Friendica\Core\Config\Configuration;
 use Friendica\Database\DBA;
 use Friendica\Model\Profile;
 use Friendica\Network\HTTPException\InternalServerErrorException;
+use Friendica\Util\Config\ConfigFileLoader;
 use Friendica\Util\HTTPSignature;
 use Friendica\Util\Profiler;
 use Psr\Log\LoggerInterface;
@@ -75,11 +75,6 @@ class App
 	 */
 	private $mode;
 
-	/**
-	 * @var string The App base path
-	 */
-	private $basePath;
-
 	/**
 	 * @var string The App URL path
 	 */
@@ -142,7 +137,7 @@ class App
 	 */
 	public function getBasePath()
 	{
-		return $this->basePath;
+		return $this->config->get('system', 'basepath');
 	}
 
 	/**
@@ -187,7 +182,7 @@ class App
 	 */
 	public function registerStylesheet($path)
 	{
-		$url = str_replace($this->basePath . DIRECTORY_SEPARATOR, '', $path);
+		$url = str_replace($this->getBasePath() . DIRECTORY_SEPARATOR, '', $path);
 
 		$this->stylesheets[] = trim($url, '/');
 	}
@@ -204,7 +199,7 @@ class App
 	 */
 	public function registerFooterScript($path)
 	{
-		$url = str_replace($this->basePath . DIRECTORY_SEPARATOR, '', $path);
+		$url = str_replace($this->getBasePath() . DIRECTORY_SEPARATOR, '', $path);
 
 		$this->footerScripts[] = trim($url, '/');
 	}
@@ -216,7 +211,6 @@ class App
 	/**
 	 * @brief App constructor.
 	 *
-	 * @param string           $basePath   The basedir of the app
 	 * @param Configuration    $config    The Configuration
 	 * @param App\Mode         $mode      The mode of this Friendica app
 	 * @param LoggerInterface  $logger    The current app logger
@@ -225,7 +219,7 @@ class App
 	 *
 	 * @throws Exception if the Basepath is not usable
 	 */
-	public function __construct($basePath, Configuration $config, App\Mode $mode, LoggerInterface $logger, Profiler $profiler, $isBackend = true)
+	public function __construct(Configuration $config, App\Mode $mode, LoggerInterface $logger, Profiler $profiler, $isBackend = true)
 	{
 		BaseObject::setApp($this);
 
@@ -233,13 +227,6 @@ class App
 		$this->config   = $config;
 		$this->profiler = $profiler;
 		$this->mode     = $mode;
-		$cfgBasePath = $this->config->get('system', 'basepath');
-		$this->basePath = !empty($cfgBasePath) ? $cfgBasePath : $basePath;
-
-		if (!Core\System::isDirectoryUsable($this->basePath, false)) {
-			throw new Exception('Basepath \'' . $this->basePath . '\' isn\'t usable.');
-		}
-		$this->basePath = rtrim($this->basePath, DIRECTORY_SEPARATOR);
 
 		$this->checkBackend($isBackend);
 		$this->checkFriendicaApp();
@@ -275,9 +262,9 @@ class App
 
 		set_include_path(
 			get_include_path() . PATH_SEPARATOR
-			. $this->basePath . DIRECTORY_SEPARATOR . 'include' . PATH_SEPARATOR
-			. $this->basePath . DIRECTORY_SEPARATOR . 'library' . PATH_SEPARATOR
-			. $this->basePath);
+			. $this->getBasePath() . DIRECTORY_SEPARATOR . 'include' . PATH_SEPARATOR
+			. $this->getBasePath() . DIRECTORY_SEPARATOR . 'library' . PATH_SEPARATOR
+			. $this->getBasePath());
 
 		if (!empty($_SERVER['QUERY_STRING']) && strpos($_SERVER['QUERY_STRING'], 'pagename=') === 0) {
 			$this->query_string = substr($_SERVER['QUERY_STRING'], 9);
@@ -352,10 +339,10 @@ class App
 	{
 		$this->determineURLPath();
 
-		$this->getMode()->determine($this->basePath);
+		$this->getMode()->determine($this->getBasePath());
 
 		if ($this->getMode()->has(App\Mode::DBAVAILABLE)) {
-			$loader = new ConfigCacheLoader($this->basePath, $this->getMode());
+			$loader = new ConfigFileLoader($this->getBasePath(), $this->getMode());
 			$this->config->getCache()->load($loader->loadCoreConfig('addon'), true);
 
 			$this->profiler->update(
@@ -363,7 +350,7 @@ class App
 				$this->config->get('rendertime', 'callstack', false));
 
 			Core\Hook::loadHooks();
-			$loader = new ConfigCacheLoader($this->basePath, $this->mode);
+			$loader = new ConfigFileLoader($this->getBasePath(), $this->mode);
 			Core\Hook::callAll('load_config', $loader);
 		}
 
@@ -465,14 +452,14 @@ class App
 	{
 		$scheme = $this->scheme;
 
-		if (Core\Config::get('system', 'ssl_policy') == SSL_POLICY_FULL) {
+		if ($this->config->get('system', 'ssl_policy') == SSL_POLICY_FULL) {
 			$scheme = 'https';
 		}
 
 		//	Basically, we have $ssl = true on any links which can only be seen by a logged in user
 		//	(and also the login link). Anything seen by an outsider will have it turned off.
 
-		if (Core\Config::get('system', 'ssl_policy') == SSL_POLICY_SELFSIGN) {
+		if ($this->config->get('system', 'ssl_policy') == SSL_POLICY_SELFSIGN) {
 			if ($ssl) {
 				$scheme = 'https';
 			} else {
@@ -480,8 +467,8 @@ class App
 			}
 		}
 
-		if (Core\Config::get('config', 'hostname') != '') {
-			$this->hostname = Core\Config::get('config', 'hostname');
+		if ($this->config->get('config', 'hostname') != '') {
+			$this->hostname = $this->config->get('config', 'hostname');
 		}
 
 		return $scheme . '://' . $this->hostname . (!empty($this->getURLPath()) ? '/' . $this->getURLPath() : '' );
@@ -516,12 +503,12 @@ class App
 				$this->urlPath = trim($parsed['path'], '\\/');
 			}
 
-			if (file_exists($this->basePath . '/.htpreconfig.php')) {
-				include $this->basePath . '/.htpreconfig.php';
+			if (file_exists($this->getBasePath() . '/.htpreconfig.php')) {
+				include $this->getBasePath() . '/.htpreconfig.php';
 			}
 
-			if (Core\Config::get('config', 'hostname') != '') {
-				$this->hostname = Core\Config::get('config', 'hostname');
+			if ($this->config->get('config', 'hostname') != '') {
+				$this->hostname = $this->config->get('config', 'hostname');
 			}
 
 			if (!isset($this->hostname) || ($this->hostname == '')) {
@@ -532,8 +519,8 @@ class App
 
 	public function getHostName()
 	{
-		if (Core\Config::get('config', 'hostname') != '') {
-			$this->hostname = Core\Config::get('config', 'hostname');
+		if ($this->config->get('config', 'hostname') != '') {
+			$this->hostname = $this->config->get('config', 'hostname');
 		}
 
 		return $this->hostname;
@@ -583,12 +570,12 @@ class App
 
 		$this->registerStylesheet($stylesheet);
 
-		$shortcut_icon = Core\Config::get('system', 'shortcut_icon');
+		$shortcut_icon = $this->config->get('system', 'shortcut_icon');
 		if ($shortcut_icon == '') {
 			$shortcut_icon = 'images/friendica-32.png';
 		}
 
-		$touch_icon = Core\Config::get('system', 'touch_icon');
+		$touch_icon = $this->config->get('system', 'touch_icon');
 		if ($touch_icon == '') {
 			$touch_icon = 'images/friendica-128.png';
 		}
@@ -608,7 +595,7 @@ class App
 			'$update_interval' => $interval,
 			'$shortcut_icon'   => $shortcut_icon,
 			'$touch_icon'      => $touch_icon,
-			'$block_public'    => intval(Core\Config::get('system', 'block_public')),
+			'$block_public'    => intval($this->config->get('system', 'block_public')),
 			'$stylesheets'     => $this->stylesheets,
 		]) . $this->page['htmlhead'];
 	}
@@ -781,13 +768,13 @@ class App
 		 *
 		if ($this->is_backend()) {
 			$process = 'backend';
-			$max_processes = Core\Config::get('system', 'max_processes_backend');
+			$max_processes = $this->config->get('system', 'max_processes_backend');
 			if (intval($max_processes) == 0) {
 				$max_processes = 5;
 			}
 		} else {
 			$process = 'frontend';
-			$max_processes = Core\Config::get('system', 'max_processes_frontend');
+			$max_processes = $this->config->get('system', 'max_processes_frontend');
 			if (intval($max_processes) == 0) {
 				$max_processes = 20;
 			}
@@ -814,7 +801,7 @@ class App
 	 */
 	public function isMinMemoryReached()
 	{
-		$min_memory = Core\Config::get('system', 'min_memory', 0);
+		$min_memory = $this->config->get('system', 'min_memory', 0);
 		if ($min_memory == 0) {
 			return false;
 		}
@@ -861,13 +848,13 @@ class App
 	{
 		if ($this->isBackend()) {
 			$process = 'backend';
-			$maxsysload = intval(Core\Config::get('system', 'maxloadavg'));
+			$maxsysload = intval($this->config->get('system', 'maxloadavg'));
 			if ($maxsysload < 1) {
 				$maxsysload = 50;
 			}
 		} else {
 			$process = 'frontend';
-			$maxsysload = intval(Core\Config::get('system', 'maxloadavg_frontend'));
+			$maxsysload = intval($this->config->get('system', 'maxloadavg_frontend'));
 			if ($maxsysload < 1) {
 				$maxsysload = 50;
 			}
@@ -914,9 +901,9 @@ class App
 		}
 
 		if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
-			$resource = proc_open('cmd /c start /b ' . $cmdline, [], $foo, $this->basePath);
+			$resource = proc_open('cmd /c start /b ' . $cmdline, [], $foo, $this->getBasePath());
 		} else {
-			$resource = proc_open($cmdline . ' &', [], $foo, $this->basePath);
+			$resource = proc_open($cmdline . ' &', [], $foo, $this->getBasePath());
 		}
 		if (!is_resource($resource)) {
 			Core\Logger::log('We got no resource for command ' . $cmdline, Core\Logger::DEBUG);
@@ -933,7 +920,7 @@ class App
 	 */
 	public function getSenderEmailAddress()
 	{
-		$sender_email = Core\Config::get('config', 'sender_email');
+		$sender_email = $this->config->get('config', 'sender_email');
 		if (empty($sender_email)) {
 			$hostname = $this->getHostName();
 			if (strpos($hostname, ':')) {
@@ -977,7 +964,7 @@ class App
 	 */
 	private function computeCurrentTheme()
 	{
-		$system_theme = Core\Config::get('system', 'theme');
+		$system_theme = $this->config->get('system', 'theme');
 		if (!$system_theme) {
 			throw new Exception(Core\L10n::t('No system theme config value set.'));
 		}
@@ -985,7 +972,7 @@ class App
 		// Sane default
 		$this->currentTheme = $system_theme;
 
-		$allowed_themes = explode(',', Core\Config::get('system', 'allowed_themes', $system_theme));
+		$allowed_themes = explode(',', $this->config->get('system', 'allowed_themes', $system_theme));
 
 		$page_theme = null;
 		// Find the theme that belongs to the user whose stuff we are looking at
@@ -1002,7 +989,7 @@ class App
 
 		// Specific mobile theme override
 		if (($this->is_mobile || $this->is_tablet) && Core\Session::get('show-mobile', true)) {
-			$system_mobile_theme = Core\Config::get('system', 'mobile-theme');
+			$system_mobile_theme = $this->config->get('system', 'mobile-theme');
 			$user_mobile_theme = Core\Session::get('mobile-theme', $system_mobile_theme);
 
 			// --- means same mobile theme as desktop
@@ -1073,7 +1060,7 @@ class App
 	 */
 	public function checkURL()
 	{
-		$url = Core\Config::get('system', 'url');
+		$url = $this->config->get('system', 'url');
 
 		// if the url isn't set or the stored url is radically different
 		// than the currently visited url, store the current value accordingly.
@@ -1082,7 +1069,7 @@ class App
 		// We will only change the url to an ip address if there is no existing setting
 
 		if (empty($url) || (!Util\Strings::compareLink($url, $this->getBaseURL())) && (!preg_match("/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/", $this->getHostName()))) {
-			Core\Config::set('system', 'url', $this->getBaseURL());
+			$this->config->set('system', 'url', $this->getBaseURL());
 		}
 	}
 
@@ -1115,8 +1102,8 @@ class App
 
 		if (!$this->getMode()->isInstall()) {
 			// Force SSL redirection
-			if (Core\Config::get('system', 'force_ssl') && ($this->getScheme() == "http")
-				&& intval(Core\Config::get('system', 'ssl_policy')) == SSL_POLICY_FULL
+			if ($this->config->get('system', 'force_ssl') && ($this->getScheme() == "http")
+				&& intval($this->config->get('system', 'ssl_policy')) == SSL_POLICY_FULL
 				&& strpos($this->getBaseURL(), 'https://') === 0
 				&& $_SERVER['REQUEST_METHOD'] == 'GET') {
 				header('HTTP/1.1 302 Moved Temporarily');
@@ -1199,7 +1186,7 @@ class App
 			$this->module = 'maintenance';
 		} else {
 			$this->checkURL();
-			Core\Update::check($this->basePath, false);
+			Core\Update::check($this->getBasePath(), false);
 			Core\Addon::loadAddons();
 			Core\Hook::loadHooks();
 		}
@@ -1256,7 +1243,7 @@ class App
 				$this->module = "login";
 			}
 
-			$privateapps = Core\Config::get('config', 'private_addons', false);
+			$privateapps = $this->config->get('config', 'private_addons', false);
 			if (Core\Addon::isEnabled($this->module) && file_exists("addon/{$this->module}/{$this->module}.php")) {
 				//Check if module is an app and if public access to apps is allowed or not
 				if ((!local_user()) && Core\Hook::isAddonApp($this->module) && $privateapps) {
@@ -1441,7 +1428,7 @@ class App
 		header("X-Friendica-Version: " . FRIENDICA_VERSION);
 		header("Content-type: text/html; charset=utf-8");
 
-		if (Core\Config::get('system', 'hsts') && (Core\Config::get('system', 'ssl_policy') == SSL_POLICY_FULL)) {
+		if ($this->config->get('system', 'hsts') && ($this->config->get('system', 'ssl_policy') == SSL_POLICY_FULL)) {
 			header("Strict-Transport-Security: max-age=31536000");
 		}
 
diff --git a/src/Core/Config/Cache/ConfigCache.php b/src/Core/Config/Cache/ConfigCache.php
index cb299eb33..f61865cee 100644
--- a/src/Core/Config/Cache/ConfigCache.php
+++ b/src/Core/Config/Cache/ConfigCache.php
@@ -5,7 +5,7 @@ namespace Friendica\Core\Config\Cache;
 /**
  * The Friendica config cache for the application
  * Initial, all *.config.php files are loaded into this cache with the
- * ConfigCacheLoader ( @see ConfigCacheLoader )
+ * ConfigFileLoader ( @see ConfigFileLoader )
  */
 class ConfigCache implements IConfigCache, IPConfigCache
 {
diff --git a/src/Core/Config/Configuration.php b/src/Core/Config/Configuration.php
index 532ed982a..c6fe626d9 100644
--- a/src/Core/Config/Configuration.php
+++ b/src/Core/Config/Configuration.php
@@ -10,6 +10,16 @@ namespace Friendica\Core\Config;
  */
 class Configuration
 {
+	/**
+	 * The blacklist of configuration settings, which should not get saved to the backend
+	 * @var array
+	 */
+	private $configSaveBlacklist = [
+		'config' => [
+			'hostname' => true,
+		]
+	];
+
 	/**
 	 * @var Cache\IConfigCache
 	 */
@@ -117,7 +127,7 @@ class Configuration
 		$cached = $this->configCache->set($cat, $key, $value);
 
 		// If there is no connected adapter, we're finished
-		if (!$this->configAdapter->isConnected()) {
+		if (!$this->configAdapter->isConnected() || !empty($this->configSaveBlacklist[$cat][$key])) {
 			return $cached;
 		}
 
diff --git a/src/Core/Console/AutomaticInstallation.php b/src/Core/Console/AutomaticInstallation.php
index 280e3d107..911c1c00a 100644
--- a/src/Core/Console/AutomaticInstallation.php
+++ b/src/Core/Console/AutomaticInstallation.php
@@ -7,6 +7,7 @@ use Friendica\BaseObject;
 use Friendica\Core\Config;
 use Friendica\Core\Installer;
 use Friendica\Core\Theme;
+use Friendica\Util\Config\ConfigFileLoader;
 use RuntimeException;
 
 class AutomaticInstallation extends Console
@@ -103,8 +104,8 @@ HELP;
 			}
 
 			//reload the config cache
-			$loader = new Config\Cache\ConfigCacheLoader($a->getBasePath(), $a->getMode());
-			$loader->loadConfigFiles($configCache);
+			$loader = new ConfigFileLoader($a->getBasePath(), $a->getMode());
+			$loader->setupCache($configCache);
 
 		} else {
 			// Creating config file
diff --git a/src/Core/Update.php b/src/Core/Update.php
index bb2513d38..7cb321267 100644
--- a/src/Core/Update.php
+++ b/src/Core/Update.php
@@ -2,8 +2,12 @@
 
 namespace Friendica\Core;
 
+use Friendica\App;
+use Friendica\Core\Config\Cache\IConfigCache;
 use Friendica\Database\DBA;
 use Friendica\Database\DBStructure;
+use Friendica\Util\Config\ConfigFileLoader;
+use Friendica\Util\Config\ConfigFileSaver;
 use Friendica\Util\Strings;
 
 class Update
@@ -24,6 +28,11 @@ class Update
 			return;
 		}
 
+		// Don't check the status if the last update was failed
+		if (Config::get('system', 'update', Update::SUCCESS, true) == Update::FAILED) {
+			return;
+		}
+
 		$build = Config::get('system', 'build');
 
 		if (empty($build)) {
@@ -101,7 +110,9 @@ class Update
 					for ($x = $stored + 1; $x <= $current; $x++) {
 						$r = self::runUpdateFunction($x, 'pre_update');
 						if (!$r) {
-							break;
+							Config::set('system', 'update', Update::FAILED);
+							Lock::release('dbupdate');
+							return $r;
 						}
 					}
 
@@ -115,6 +126,7 @@ class Update
 							);
 						}
 						Logger::error('Update ERROR.', ['from' => $stored, 'to' => $current, 'retval' => $retval]);
+						Config::set('system', 'update', Update::FAILED);
 						Lock::release('dbupdate');
 						return $retval;
 					} else {
@@ -127,7 +139,9 @@ class Update
 					for ($x = $stored + 1; $x <= $current; $x++) {
 						$r = self::runUpdateFunction($x, 'update');
 						if (!$r) {
-							break;
+							Config::set('system', 'update', Update::FAILED);
+							Lock::release('dbupdate');
+							return $r;
 						}
 					}
 
@@ -136,6 +150,7 @@ class Update
 						self::updateSuccessfull($stored, $current);
 					}
 
+					Config::set('system', 'update', Update::SUCCESS);
 					Lock::release('dbupdate');
 				}
 			}
@@ -208,6 +223,74 @@ class Update
 		}
 	}
 
+	/**
+	 * Checks the config settings and saves given config values into the config file
+	 *
+	 * @param string   $basePath The basepath of Friendica
+	 * @param App\Mode $mode     The Application mode
+	 *
+	 * @return bool True, if something has been saved
+	 */
+	public static function saveConfigToFile($basePath, App\Mode $mode)
+	{
+		$configFileLoader = new ConfigFileLoader($basePath, $mode);
+		$configCache = new Config\Cache\ConfigCache();
+		$configFileLoader->setupCache($configCache);
+		$configFileSaver = new ConfigFileSaver($basePath);
+
+		$updated = false;
+
+		if (self::updateConfigEntry($configCache, $configFileSaver,'config', 'hostname')) {
+			$updated = true;
+		};
+		if (self::updateConfigEntry($configCache, $configFileSaver,'system', 'basepath')) {
+			$updated = true;
+		}
+
+		if (!$configFileSaver->saveToConfigFile()) {
+			Logger::alert('Config entry update failed - maybe wrong permission?');
+			return false;
+		}
+
+		DBA::delete('config', ['cat' => 'config', 'k' => 'hostname']);
+		DBA::delete('config', ['cat' => 'system', 'k' => 'basepath']);
+
+		return $updated;
+	}
+
+	/**
+	 * Adds a value to the ConfigFileSave in case it isn't already updated
+	 *
+	 * @param IConfigCache    $configCache     The cached config file
+	 * @param ConfigFileSaver $configFileSaver The config file saver
+	 * @param string          $cat             The config category
+	 * @param string          $key             The config key
+	 *
+	 * @return boolean True, if a value was updated
+	 *
+	 * @throws \Exception if DBA or Logger doesn't work
+	 */
+	private static function updateConfigEntry(IConfigCache $configCache, ConfigFileSaver $configFileSaver, $cat, $key)
+	{
+		// check if the config file differs from the whole configuration (= The db contains other values)
+		$fileConfig = $configCache->get($cat, $key);
+
+		$savedConfig = DBA::selectFirst('config', ['v'], ['cat' => $cat, 'k' => $key]);
+
+		if (!DBA::isResult($savedConfig)) {
+			return false;
+		}
+
+		if ($fileConfig !== $savedConfig['v']) {
+			Logger::info('Difference in config found', ['cat' => $cat, 'key' => $key, 'file' => $fileConfig, 'saved' => $savedConfig['v']]);
+			$configFileSaver->addConfigValue($cat, $key, $savedConfig['v']);
+		} else {
+			Logger::info('No Difference in config found', ['cat' => $cat, 'key' => $key, 'value' => $fileConfig, 'saved' => $savedConfig['v']]);
+		}
+
+		return true;
+	}
+
 	/**
 	 * send the email and do what is needed to do on update fails
 	 *
diff --git a/src/Factory/ConfigFactory.php b/src/Factory/ConfigFactory.php
index 6a30cf0e0..1f9662bdd 100644
--- a/src/Factory/ConfigFactory.php
+++ b/src/Factory/ConfigFactory.php
@@ -6,18 +6,19 @@ use Friendica\Core;
 use Friendica\Core\Config;
 use Friendica\Core\Config\Adapter;
 use Friendica\Core\Config\Cache;
+use Friendica\Util\Config\ConfigFileLoader;
 
 class ConfigFactory
 {
 	/**
-	 * @param Cache\ConfigCacheLoader $loader The Config Cache loader (INI/config/.htconfig)
+	 * @param ConfigFileLoader $loader The Config Cache loader (INI/config/.htconfig)
 	 *
 	 * @return Cache\ConfigCache
 	 */
-	public static function createCache(Cache\ConfigCacheLoader $loader)
+	public static function createCache(ConfigFileLoader $loader)
 	{
 		$configCache = new Cache\ConfigCache();
-		$loader->loadConfigFiles($configCache);
+		$loader->setupCache($configCache);
 
 		return $configCache;
 	}
diff --git a/src/Factory/DependencyFactory.php b/src/Factory/DependencyFactory.php
index 265dca88e..63defd95f 100644
--- a/src/Factory/DependencyFactory.php
+++ b/src/Factory/DependencyFactory.php
@@ -3,9 +3,9 @@
 namespace Friendica\Factory;
 
 use Friendica\App;
-use Friendica\Core\Config\Cache;
 use Friendica\Factory;
 use Friendica\Util\BasePath;
+use Friendica\Util\Config;
 
 class DependencyFactory
 {
@@ -24,7 +24,7 @@ class DependencyFactory
 	{
 		$basePath = BasePath::create($directory, $_SERVER);
 		$mode = new App\Mode($basePath);
-		$configLoader = new Cache\ConfigCacheLoader($basePath, $mode);
+		$configLoader = new Config\ConfigFileLoader($basePath, $mode);
 		$configCache = Factory\ConfigFactory::createCache($configLoader);
 		$profiler = Factory\ProfilerFactory::create($configCache);
 		Factory\DBFactory::init($basePath, $configCache, $profiler, $_SERVER);
@@ -34,6 +34,6 @@ class DependencyFactory
 		$logger = Factory\LoggerFactory::create($channel, $config, $profiler);
 		Factory\LoggerFactory::createDev($channel, $config, $profiler);
 
-		return new App($basePath, $config, $mode, $logger, $profiler, $isBackend);
+		return new App($config, $mode, $logger, $profiler, $isBackend);
 	}
 }
diff --git a/src/Core/Config/Cache/ConfigCacheLoader.php b/src/Util/Config/ConfigFileLoader.php
similarity index 80%
rename from src/Core/Config/Cache/ConfigCacheLoader.php
rename to src/Util/Config/ConfigFileLoader.php
index 9e06d8fb8..d677d4bfe 100644
--- a/src/Core/Config/Cache/ConfigCacheLoader.php
+++ b/src/Util/Config/ConfigFileLoader.php
@@ -1,29 +1,21 @@
 <?php
 
-namespace Friendica\Core\Config\Cache;
+namespace Friendica\Util\Config;
 
 use Friendica\App;
 use Friendica\Core\Addon;
+use Friendica\Core\Config\Cache\IConfigCache;
 
 /**
- * The ConfigCacheLoader loads config-files and stores them in a ConfigCache ( @see ConfigCache )
+ * The ConfigFileLoader loads config-files and stores them in a IConfigCache ( @see IConfigCache )
  *
  * It is capable of loading the following config files:
  * - *.config.php   (current)
  * - *.ini.php      (deprecated)
  * - *.htconfig.php (deprecated)
  */
-class ConfigCacheLoader
+class ConfigFileLoader extends ConfigFileManager
 {
-	/**
-	 * The Sub directory of the config-files
-	 * @var string
-	 */
-	const SUBDIRECTORY = 'config';
-
-	private $baseDir;
-	private $configDir;
-
 	/**
 	 * @var App\Mode
 	 */
@@ -31,22 +23,21 @@ class ConfigCacheLoader
 
 	public function __construct($baseDir, App\Mode $mode)
 	{
+		parent::__construct($baseDir);
 		$this->appMode = $mode;
-		$this->baseDir = $baseDir;
-		$this->configDir = $baseDir . DIRECTORY_SEPARATOR . self::SUBDIRECTORY;
 	}
 
 	/**
-	 * Load the configuration files
+	 * Load the configuration files into an configuration cache
 	 *
 	 * First loads the default value for all the configuration keys, then the legacy configuration files, then the
 	 * expected local.config.php
 	 *
-	 * @param IConfigCache The config cache to load to
+	 * @param IConfigCache $config The config cache to load to
 	 *
 	 * @throws \Exception
 	 */
-	public function loadConfigFiles(IConfigCache $config)
+	public function setupCache(IConfigCache $config)
 	{
 		$config->load($this->loadCoreConfig('defaults'));
 		$config->load($this->loadCoreConfig('settings'));
@@ -66,18 +57,18 @@ class ConfigCacheLoader
 	/**
 	 * Tries to load the specified core-configuration and returns the config array.
 	 *
-	 * @param string $name The name of the configuration
+	 * @param string $name The name of the configuration (default is empty, which means 'local')
 	 *
 	 * @return array The config array (empty if no config found)
 	 *
 	 * @throws \Exception if the configuration file isn't readable
 	 */
-	public function loadCoreConfig($name)
+	public function loadCoreConfig($name = '')
 	{
-		if (file_exists($this->configDir . DIRECTORY_SEPARATOR . $name . '.config.php')) {
-			return $this->loadConfigFile($this->configDir . DIRECTORY_SEPARATOR . $name . '.config.php');
-		} elseif (file_exists($this->configDir . DIRECTORY_SEPARATOR . $name . '.ini.php')) {
-			return $this->loadINIConfigFile($this->configDir . DIRECTORY_SEPARATOR . $name . '.ini.php');
+		if (!empty($this->getConfigFullName($name))) {
+			return $this->loadConfigFile($this->getConfigFullName($name));
+		} elseif (!empty($this->getIniFullName($name))) {
+			return $this->loadINIConfigFile($this->getIniFullName($name));
 		} else {
 			return [];
 		}
@@ -110,22 +101,19 @@ class ConfigCacheLoader
 	/**
 	 * Tries to load the legacy config files (.htconfig.php, .htpreconfig.php) and returns the config array.
 	 *
-	 * @param string $name The name of the config file
+	 * @param string $name The name of the config file (default is empty, which means .htconfig.php)
 	 *
 	 * @return array The configuration array (empty if no config found)
 	 *
 	 * @deprecated since version 2018.09
 	 */
-	private function loadLegacyConfig($name)
+	private function loadLegacyConfig($name = '')
 	{
-		$filePath = $this->baseDir  . DIRECTORY_SEPARATOR . '.' . $name . '.php';
-
 		$config = [];
-
-		if (file_exists($filePath)) {
+		if (!empty($this->getHtConfigFullName($name))) {
 			$a = new \stdClass();
 			$a->config = [];
-			include $filePath;
+			include $this->getHtConfigFullName($name);
 
 			$htConfigCategories = array_keys($a->config);
 
diff --git a/src/Util/Config/ConfigFileManager.php b/src/Util/Config/ConfigFileManager.php
new file mode 100644
index 000000000..729e59d74
--- /dev/null
+++ b/src/Util/Config/ConfigFileManager.php
@@ -0,0 +1,90 @@
+<?php
+
+namespace Friendica\Util\Config;
+
+/**
+ * An abstract class in case of handling with config files
+ */
+abstract class ConfigFileManager
+{
+	/**
+	 * The Sub directory of the config-files
+	 * @var string
+	 */
+	const SUBDIRECTORY = 'config';
+
+	/**
+	 * The default name of the user defined config file
+	 * @var string
+	 */
+	const CONFIG_LOCAL    = 'local';
+
+	/**
+	 * The default name of the user defined ini file
+	 * @var string
+	 */
+	const CONFIG_INI      = 'local';
+
+	/**
+	 * The default name of the user defined legacy config file
+	 * @var string
+	 */
+	const CONFIG_HTCONFIG = 'htconfig';
+
+	protected $baseDir;
+	protected $configDir;
+
+	/**
+	 * @param string $baseDir The base directory of Friendica
+	 */
+	public function __construct($baseDir)
+	{
+		$this->baseDir = $baseDir;
+		$this->configDir = $baseDir . DIRECTORY_SEPARATOR . self::SUBDIRECTORY;
+	}
+
+	/**
+	 * Gets the full name (including the path) for a *.config.php (default is local.config.php)
+	 *
+	 * @param string $name The config name (default is empty, which means local.config.php)
+	 *
+	 * @return string The full name or empty if not found
+	 */
+	protected function getConfigFullName($name = '')
+	{
+		$name = !empty($name) ? $name : self::CONFIG_LOCAL;
+
+		$fullName = $this->configDir . DIRECTORY_SEPARATOR . $name . '.config.php';
+		return file_exists($fullName) ? $fullName : '';
+	}
+
+	/**
+	 * Gets the full name (including the path) for a *.ini.php (default is local.ini.php)
+	 *
+	 * @param string $name The config name (default is empty, which means local.ini.php)
+	 *
+	 * @return string The full name or empty if not found
+	 */
+	protected function getIniFullName($name = '')
+	{
+		$name = !empty($name) ? $name : self::CONFIG_INI;
+
+		$fullName = $this->configDir . DIRECTORY_SEPARATOR . $name . '.ini.php';
+		return file_exists($fullName) ? $fullName : '';
+	}
+
+	/**
+	 * Gets the full name (including the path) for a .*.php (default is .htconfig.php)
+	 *
+	 * @param string $name The config name (default is empty, which means .htconfig.php)
+	 *
+	 * @return string The full name or empty if not found
+	 */
+	protected function getHtConfigFullName($name = '')
+	{
+		$name = !empty($name) ? $name : self::CONFIG_HTCONFIG;
+
+		$fullName = $this->baseDir  . DIRECTORY_SEPARATOR . '.' . $name . '.php';
+		return file_exists($fullName) ? $fullName : '';
+	}
+}
diff --git a/src/Util/Config/ConfigFileSaver.php b/src/Util/Config/ConfigFileSaver.php
new file mode 100644
index 000000000..e32e11a4d
--- /dev/null
+++ b/src/Util/Config/ConfigFileSaver.php
@@ -0,0 +1,341 @@
+<?php
+
+namespace Friendica\Util\Config;
+
+/**
+ * The ConfigFileSaver saves specific variables into the config-files
+ *
+ * It is capable of loading the following config files:
+ * - *.config.php   (current)
+ * - *.ini.php      (deprecated)
+ * - *.htconfig.php (deprecated)
+ */
+class ConfigFileSaver extends ConfigFileManager
+{
+	/**
+	 * The standard indentation for config files
+	 * @var string
+	 */
+	const INDENT = "\t";
+
+	/**
+	 * The settings array to save to
+	 * @var array
+	 */
+	private $settings = [];
+
+	/**
+	 * Adds a given value to the config file
+	 * Either it replaces the current value or it will get added
+	 *
+	 * @param string $cat   The configuration category
+	 * @param string $key   The configuration key
+	 * @param string $value The new value
+	 */
+	public function addConfigValue($cat, $key, $value)
+	{
+		$settingsCount = count(array_keys($this->settings));
+
+		for ($i = 0; $i < $settingsCount; $i++) {
+			// if already set, overwrite the value
+			if ($this->settings[$i]['cat'] === $cat &&
+				$this->settings[$i]['key'] === $key) {
+				$this->settings[$i] = ['cat' => $cat, 'key' => $key, 'value' => $value];
+				return;
+			}
+		}
+
+		$this->settings[] = ['cat' => $cat, 'key' => $key, 'value' => $value];
+	}
+
+	/**
+	 * Resetting all added configuration entries so far
+	 */
+	public function reset()
+	{
+		$this->settings = [];
+	}
+
+	/**
+	 * Save all added configuration entries to the given config files
+	 * After updating the config entries, all configuration entries will be reseted
+	 *
+	 * @param string $name The name of the configuration file (default is empty, which means the default name each type)
+	 *
+	 * @return bool true, if at least one configuration file was successfully updated or nothing to do
+	 */
+	public function saveToConfigFile($name = '')
+	{
+		// If no settings et, return true
+		if (count(array_keys($this->settings)) === 0) {
+			return true;
+		}
+
+		$saved = false;
+
+		// Check for the *.config.php file inside the /config/ path
+		list($reading, $writing) = $this->openFile($this->getConfigFullName($name));
+		if (isset($reading) && isset($writing)) {
+			$this->saveConfigFile($reading, $writing);
+			// Close the current file handler and rename them
+			if ($this->closeFile($this->getConfigFullName($name), $reading, $writing)) {
+				// just return true, if everything went fine
+				$saved = true;
+			}
+		}
+
+		// Check for the *.ini.php file inside the /config/ path
+		list($reading, $writing) = $this->openFile($this->getIniFullName($name));
+		if (isset($reading) && isset($writing)) {
+			$this->saveINIConfigFile($reading, $writing);
+			// Close the current file handler and rename them
+			if ($this->closeFile($this->getIniFullName($name), $reading, $writing)) {
+				// just return true, if everything went fine
+				$saved = true;
+			}
+		}
+
+		// Check for the *.php file (normally .htconfig.php) inside the / path
+		list($reading, $writing) = $this->openFile($this->getHtConfigFullName($name));
+		if (isset($reading) && isset($writing)) {
+			$this->saveToLegacyConfig($reading, $writing);
+			// Close the current file handler and rename them
+			if ($this->closeFile($this->getHtConfigFullName($name), $reading, $writing)) {
+				// just return true, if everything went fine
+				$saved = true;
+			}
+		}
+
+		$this->reset();
+
+		return $saved;
+	}
+
+	/**
+	 * Opens a config file and returns two handler for reading and writing
+	 *
+	 * @param string $fullName The full name of the current config
+	 *
+	 * @return array An array containing the two reading and writing handler
+	 */
+	private function openFile($fullName)
+	{
+		if (empty($fullName)) {
+			return [null, null];
+		}
+
+		try {
+			$reading = fopen($fullName, 'r');
+		} catch (\Exception $exception) {
+			return [null, null];
+		}
+
+		if (!$reading) {
+			return [null, null];
+		}
+
+		try {
+			$writing = fopen($fullName . '.tmp', 'w');
+		} catch (\Exception $exception) {
+			fclose($reading);
+			return [null, null];
+		}
+
+		if (!$writing) {
+			fclose($reading);
+			return [null, null];
+		}
+
+		return [$reading, $writing];
+	}
+
+	/**
+	 * Close and rename the config file
+	 *
+	 * @param string   $fullName The full name of the current config
+	 * @param resource $reading  The reading resource handler
+	 * @param resource $writing  The writing resource handler
+	 *
+	 * @return bool True, if the close was successful
+	 */
+	private function closeFile($fullName, $reading, $writing)
+	{
+		fclose($reading);
+		fclose($writing);
+
+		try {
+			$renamed = rename($fullName, $fullName . '.old');
+		} catch (\Exception $exception) {
+			return false;
+		}
+
+		if (!$renamed) {
+			return false;
+		}
+
+		try {
+			$renamed = rename($fullName . '.tmp', $fullName);
+		} catch (\Exception $exception) {
+			// revert the move of the current config file to have at least the old config
+			rename($fullName . '.old', $fullName);
+			return false;
+		}
+
+		if (!$renamed) {
+			// revert the move of the current config file to have at least the old config
+			rename($fullName . '.old', $fullName);
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Saves all configuration values to a config file
+	 *
+	 * @param resource $reading The reading handler
+	 * @param resource $writing The writing handler
+	 */
+	private function saveConfigFile($reading, $writing)
+	{
+		$settingsCount = count(array_keys($this->settings));
+		$categoryFound = array_fill(0, $settingsCount, false);
+		$categoryBracketFound = array_fill(0, $settingsCount, false);;
+		$lineFound = array_fill(0, $settingsCount, false);;
+		$lineArrowFound = array_fill(0, $settingsCount, false);;
+
+		while (!feof($reading)) {
+
+			$line = fgets($reading);
+
+			// check for each added setting if we have to replace a config line
+			for ($i = 0; $i < $settingsCount; $i++) {
+
+				// find the first line like "'system' =>"
+				if (!$categoryFound[$i] && stristr($line, sprintf('\'%s\'', $this->settings[$i]['cat']))) {
+					$categoryFound[$i] = true;
+				}
+
+				// find the first line with a starting bracket ( "[" )
+				if ($categoryFound[$i] && !$categoryBracketFound[$i] && stristr($line, '[')) {
+					$categoryBracketFound[$i] = true;
+				}
+
+				// find the first line with the key like "'value'"
+				if ($categoryBracketFound[$i] && !$lineFound[$i] && stristr($line, sprintf('\'%s\'', $this->settings[$i]['key']))) {
+					$lineFound[$i] = true;
+				}
+
+				// find the first line with an arrow ("=>") after finding the key
+				if ($lineFound[$i] && !$lineArrowFound[$i] && stristr($line, '=>')) {
+					$lineArrowFound[$i] = true;
+				}
+
+				// find the current value and replace it
+				if ($lineArrowFound[$i] && preg_match_all('/\'(.*?)\'/', $line, $matches, PREG_SET_ORDER)) {
+					$lineVal = end($matches)[0];
+					$line = str_replace($lineVal, '\'' . $this->settings[$i]['value'] . '\'', $line);
+					$categoryFound[$i] = false;
+					$categoryBracketFound[$i] = false;
+					$lineFound[$i] = false;
+					$lineArrowFound[$i] = false;
+					// if a line contains a closing bracket for the category ( "]" ) and we didn't find the key/value pair,
+					// add it as a new line before the closing bracket
+				} elseif ($categoryBracketFound[$i] && !$lineArrowFound[$i] && stristr($line, ']')) {
+					$categoryFound[$i] = false;
+					$categoryBracketFound[$i] = false;
+					$lineFound[$i] = false;
+					$lineArrowFound[$i] = false;
+					$newLine = sprintf(self::INDENT . self::INDENT . '\'%s\' => \'%s\',' . PHP_EOL, $this->settings[$i]['key'], $this->settings[$i]['value']);
+					$line = $newLine . $line;
+				}
+			}
+
+			fputs($writing, $line);
+		}
+	}
+
+	/**
+	 * Saves a value to a ini file
+	 *
+	 * @param resource $reading The reading handler
+	 * @param resource $writing The writing handler
+	 */
+	private function saveINIConfigFile($reading, $writing)
+	{
+		$settingsCount = count(array_keys($this->settings));
+		$categoryFound = array_fill(0, $settingsCount, false);
+
+		while (!feof($reading)) {
+
+			$line = fgets($reading);
+
+			// check for each added setting if we have to replace a config line
+			for ($i = 0; $i < $settingsCount; $i++) {
+
+				// find the category of the current setting
+				if (!$categoryFound[$i] && stristr($line, sprintf('[%s]', $this->settings[$i]['cat']))) {
+					$categoryFound[$i] = true;
+
+				// check the current value
+				} elseif ($categoryFound[$i] && preg_match_all('/^' . $this->settings[$i]['key'] . '\s*=\s*(.*?)$/', $line, $matches, PREG_SET_ORDER)) {
+					$line = $this->settings[$i]['key'] . ' = ' . $this->settings[$i]['value'] . PHP_EOL;
+					$categoryFound[$i] = false;
+
+				// If end of INI file, add the line before the INI end
+				} elseif ($categoryFound[$i] && (preg_match_all('/^\[.*?\]$/', $line) || preg_match_all('/^INI;.*$/', $line))) {
+					$categoryFound[$i] = false;
+					$newLine = $this->settings[$i]['key'] . ' = ' . $this->settings[$i]['value'] . PHP_EOL;
+					$line = $newLine . $line;
+				}
+			}
+
+			fputs($writing, $line);
+		}
+	}
+
+	/**
+	 * Saves a value to a .php file (normally .htconfig.php)
+	 *
+	 * @param resource $reading The reading handler
+	 * @param resource $writing The writing handler
+	 */
+	private function saveToLegacyConfig($reading, $writing)
+	{
+		$settingsCount = count(array_keys($this->settings));
+		$found  = array_fill(0, $settingsCount, false);
+		while (!feof($reading)) {
+
+			$line = fgets($reading);
+
+			// check for each added setting if we have to replace a config line
+			for ($i = 0; $i < $settingsCount; $i++) {
+
+				// check for a non plain config setting (use category too)
+				if ($this->settings[$i]['cat'] !== 'config' && preg_match_all('/^\$a\-\>config\[\'' . $this->settings[$i]['cat'] . '\'\]\[\'' . $this->settings[$i]['key'] . '\'\]\s*=\s\'*(.*?)\';$/', $line, $matches, PREG_SET_ORDER)) {
+					$line = '$a->config[\'' . $this->settings[$i]['cat'] . '\'][\'' . $this->settings[$i]['key'] . '\'] = \'' . $this->settings[$i]['value'] . '\';' . PHP_EOL;
+					$found[$i] = true;
+
+				// check for a plain config setting (don't use a category)
+				} elseif ($this->settings[$i]['cat'] === 'config' && preg_match_all('/^\$a\-\>config\[\'' . $this->settings[$i]['key'] . '\'\]\s*=\s\'*(.*?)\';$/', $line, $matches, PREG_SET_ORDER)) {
+					$line = '$a->config[\'' . $this->settings[$i]['key'] . '\'] = \'' . $this->settings[$i]['value'] . '\';' . PHP_EOL;
+					$found[$i] = true;
+				}
+			}
+
+			fputs($writing, $line);
+		}
+
+		for ($i = 0; $i < $settingsCount; $i++) {
+			if (!$found[$i]) {
+				if ($this->settings[$i]['cat'] !== 'config') {
+					$line = '$a->config[\'' . $this->settings[$i]['cat'] . '\'][\'' . $this->settings[$i]['key'] . '\'] = \'' . $this->settings[$i]['value'] . '\';' . PHP_EOL;
+				} else {
+					$line = '$a->config[\'' . $this->settings[$i]['key'] . '\'] = \'' . $this->settings[$i]['value'] . '\';' . PHP_EOL;
+				}
+
+				fputs($writing, $line);
+			}
+		}
+	}
+}
diff --git a/src/Worker/DBUpdate.php b/src/Worker/DBUpdate.php
index 05bace146..001df25a8 100644
--- a/src/Worker/DBUpdate.php
+++ b/src/Worker/DBUpdate.php
@@ -6,12 +6,16 @@
 namespace Friendica\Worker;
 
 use Friendica\BaseObject;
+use Friendica\Core\Config;
 use Friendica\Core\Update;
 
 class DBUpdate extends BaseObject
 {
 	public static function execute()
 	{
-		Update::run(self::getApp()->getBasePath());
+		// Just in case the last update wasn't failed
+		if (Config::get('system', 'update', Update::SUCCESS, true) != Update::FAILED) {
+			Update::run(self::getApp()->getBasePath());
+		}
 	}
 }
diff --git a/tests/DatabaseTest.php b/tests/DatabaseTest.php
index 6a64b2881..fec31b05a 100644
--- a/tests/DatabaseTest.php
+++ b/tests/DatabaseTest.php
@@ -6,10 +6,10 @@
 namespace Friendica\Test;
 
 use Friendica\App;
-use Friendica\Core\Config\Cache;
 use Friendica\Database\DBA;
 use Friendica\Factory;
 use Friendica\Util\BasePath;
+use Friendica\Util\Config\ConfigFileLoader;
 use Friendica\Util\Profiler;
 use PHPUnit\DbUnit\DataSet\YamlDataSet;
 use PHPUnit\DbUnit\TestCaseTrait;
@@ -43,7 +43,7 @@ abstract class DatabaseTest extends MockedTest
 
 		$basePath = BasePath::create(dirname(__DIR__));
 		$mode = new App\Mode($basePath);
-		$configLoader = new Cache\ConfigCacheLoader($basePath, $mode);
+		$configLoader = new ConfigFileLoader($basePath, $mode);
 		$config = Factory\ConfigFactory::createCache($configLoader);
 
 		$profiler = \Mockery::mock(Profiler::class);
diff --git a/tests/datasets/config/.htconfig.test.php b/tests/datasets/config/.htconfig.php
similarity index 95%
rename from tests/datasets/config/.htconfig.test.php
rename to tests/datasets/config/.htconfig.php
index 193142c49..04e3e9cc9 100644
--- a/tests/datasets/config/.htconfig.test.php
+++ b/tests/datasets/config/.htconfig.php
@@ -33,7 +33,7 @@ $a->config['sitename'] = "Friendica My Network";
 // must precisely match the email address of the person logged in.
 $a->config['register_policy'] = REGISTER_OPEN;
 $a->config['register_text'] = 'A register text';
-$a->config['admin_email'] = 'admin@friendica.local';
+$a->config['admin_email'] = 'admin@test.it';
 $a->config['admin_nickname'] = 'Friendly admin';
 
 // Maximum size of an imported message, 0 is unlimited
@@ -52,7 +52,7 @@ $a->config['system']['huburl'] = '[internal]';
 $a->config['system']['allowed_themes'] = 'quattro,vier,duepuntozero';
 
 // default system theme
-$a->config['system']['theme'] = 'duepuntozero';
+$a->config['system']['theme'] = 'frio';
 
 // By default allow pseudonyms
 $a->config['system']['no_regfullname'] = true;
diff --git a/tests/datasets/config/local.config.php b/tests/datasets/config/local.config.php
index 8a392909f..f28e1f2e8 100644
--- a/tests/datasets/config/local.config.php
+++ b/tests/datasets/config/local.config.php
@@ -23,5 +23,6 @@ return [
 	'system' => [
 		'default_timezone' => 'UTC',
 		'language' => 'en',
+		'theme' => 'frio',
 	],
 ];
diff --git a/tests/datasets/config/local.ini.php b/tests/datasets/config/local.ini.php
index 1fea0b028..a9e462d13 100644
--- a/tests/datasets/config/local.ini.php
+++ b/tests/datasets/config/local.ini.php
@@ -11,6 +11,9 @@ username = testuser
 password = testpw
 database = testdb
 
+[system]
+theme = frio
+
 [config]
 admin_email = admin@test.it
 INI;
diff --git a/tests/include/ApiTest.php b/tests/include/ApiTest.php
index df3a7e940..80a25c20c 100644
--- a/tests/include/ApiTest.php
+++ b/tests/include/ApiTest.php
@@ -7,13 +7,13 @@ namespace Friendica\Test;
 
 use Friendica\App;
 use Friendica\Core\Config;
-use Friendica\Core\Config\Cache;
 use Friendica\Core\PConfig;
 use Friendica\Core\Protocol;
 use Friendica\Core\System;
 use Friendica\Factory;
 use Friendica\Network\HTTPException;
 use Friendica\Util\BasePath;
+use Friendica\Util\Config\ConfigFileLoader;
 use Monolog\Handler\TestHandler;
 
 require_once __DIR__ . '/../../include/api.php';
@@ -50,14 +50,14 @@ class ApiTest extends DatabaseTest
 	{
 		$basePath = BasePath::create(dirname(__DIR__) . '/../');
 		$mode = new App\Mode($basePath);
-		$configLoader = new Cache\ConfigCacheLoader($basePath, $mode);
+		$configLoader = new ConfigFileLoader($basePath, $mode);
 		$configCache = Factory\ConfigFactory::createCache($configLoader);
 		$profiler = Factory\ProfilerFactory::create($configCache);
 		Factory\DBFactory::init($basePath, $configCache, $profiler, $_SERVER);
 		$config = Factory\ConfigFactory::createConfig($configCache);
 		Factory\ConfigFactory::createPConfig($configCache);
 		$logger = Factory\LoggerFactory::create('test', $config, $profiler);
-		$this->app = new App($basePath, $config, $mode, $logger, $profiler, false);
+		$this->app = new App($config, $mode, $logger, $profiler, false);
 
 		parent::setUp();
 
diff --git a/tests/src/Database/DBATest.php b/tests/src/Database/DBATest.php
index e638e2740..c94137721 100644
--- a/tests/src/Database/DBATest.php
+++ b/tests/src/Database/DBATest.php
@@ -3,11 +3,11 @@ namespace Friendica\Test\src\Database;
 
 use Friendica\App;
 use Friendica\Core\Config;
-use Friendica\Core\Config\Cache;
 use Friendica\Database\DBA;
 use Friendica\Factory;
 use Friendica\Test\DatabaseTest;
 use Friendica\Util\BasePath;
+use Friendica\Util\Config\ConfigFileLoader;
 
 class DBATest extends DatabaseTest
 {
@@ -15,14 +15,14 @@ class DBATest extends DatabaseTest
 	{
 		$basePath = BasePath::create(dirname(__DIR__) . '/../../');
 		$mode = new App\Mode($basePath);
-		$configLoader = new Cache\ConfigCacheLoader($basePath, $mode);
+		$configLoader = new ConfigFileLoader($basePath, $mode);
 		$configCache = Factory\ConfigFactory::createCache($configLoader);
 		$profiler = Factory\ProfilerFactory::create($configCache);
 		Factory\DBFactory::init($basePath, $configCache, $profiler, $_SERVER);
 		$config = Factory\ConfigFactory::createConfig($configCache);
 		Factory\ConfigFactory::createPConfig($configCache);
 		$logger = Factory\LoggerFactory::create('test', $config, $profiler);
-		$this->app = new App($basePath, $config, $mode, $logger, $profiler, false);
+		$this->app = new App($config, $mode, $logger, $profiler, false);
 
 		parent::setUp();
 
diff --git a/tests/src/Database/DBStructureTest.php b/tests/src/Database/DBStructureTest.php
index 34f659b51..152014c11 100644
--- a/tests/src/Database/DBStructureTest.php
+++ b/tests/src/Database/DBStructureTest.php
@@ -3,11 +3,11 @@
 namespace Friendica\Test\src\Database;
 
 use Friendica\App;
-use Friendica\Core\Config\Cache;
 use Friendica\Database\DBStructure;
 use Friendica\Factory;
 use Friendica\Test\DatabaseTest;
 use Friendica\Util\BasePath;
+use Friendica\Util\Config\ConfigFileLoader;
 
 class DBStructureTest extends DatabaseTest
 {
@@ -15,14 +15,14 @@ class DBStructureTest extends DatabaseTest
 	{
 		$basePath = BasePath::create(dirname(__DIR__) . '/../../');
 		$mode = new App\Mode($basePath);
-		$configLoader = new Cache\ConfigCacheLoader($basePath, $mode);
+		$configLoader = new ConfigFileLoader($basePath, $mode);
 		$configCache = Factory\ConfigFactory::createCache($configLoader);
 		$profiler = Factory\ProfilerFactory::create($configCache);
 		Factory\DBFactory::init($basePath, $configCache, $profiler, $_SERVER);
 		$config = Factory\ConfigFactory::createConfig($configCache);
 		Factory\ConfigFactory::createPConfig($configCache);
 		$logger = Factory\LoggerFactory::create('test', $config, $profiler);
-		$this->app = new App($basePath, $config, $mode, $logger, $profiler, false);
+		$this->app = new App($config, $mode, $logger, $profiler, false);
 
 		parent::setUp();
 	}
diff --git a/tests/src/Core/Config/Cache/ConfigCacheLoaderTest.php b/tests/src/Util/Config/ConfigFileLoaderTest.php
similarity index 82%
rename from tests/src/Core/Config/Cache/ConfigCacheLoaderTest.php
rename to tests/src/Util/Config/ConfigFileLoaderTest.php
index 39dc20efd..ad0fe8afc 100644
--- a/tests/src/Core/Config/Cache/ConfigCacheLoaderTest.php
+++ b/tests/src/Util/Config/ConfigFileLoaderTest.php
@@ -1,16 +1,16 @@
 <?php
 
-namespace Friendica\Test\src\Core\Config\Cache;
+namespace Friendica\Test\src\Util\Config;
 
 use Friendica\App;
 use Friendica\Core\Config\Cache\ConfigCache;
-use Friendica\Core\Config\Cache\ConfigCacheLoader;
 use Friendica\Test\MockedTest;
 use Friendica\Test\Util\VFSTrait;
+use Friendica\Util\Config\ConfigFileLoader;
 use Mockery\MockInterface;
 use org\bovigo\vfs\vfsStream;
 
-class ConfigCacheLoaderTest extends MockedTest
+class ConfigFileLoaderTest extends MockedTest
 {
 	use VFSTrait;
 
@@ -34,10 +34,10 @@ class ConfigCacheLoaderTest extends MockedTest
 	 */
 	public function testLoadConfigFiles()
 	{
-		$configCacheLoader = new ConfigCacheLoader($this->root->url(), $this->mode);
+		$configFileLoader = new ConfigFileLoader($this->root->url(), $this->mode);
 		$configCache = new ConfigCache();
 
-		$configCacheLoader->loadConfigFiles($configCache);
+		$configFileLoader->setupCache($configCache);
 
 		$this->assertEquals($this->root->url(), $configCache->get('system', 'basepath'));
 	}
@@ -55,10 +55,10 @@ class ConfigCacheLoaderTest extends MockedTest
 			->at($this->root->getChild('config'))
 			->setContent('<?php return true;');
 
-		$configCacheLoader = new ConfigCacheLoader($this->root->url(), $this->mode);
+		$configFileLoader = new ConfigFileLoader($this->root->url(), $this->mode);
 		$configCache = new ConfigCache();
 
-		$configCacheLoader->loadConfigFiles($configCache);
+		$configFileLoader->setupCache($configCache);
 	}
 
 	/**
@@ -69,7 +69,6 @@ class ConfigCacheLoaderTest extends MockedTest
 		$this->delConfigFile('local.config.php');
 
 		$file = dirname(__DIR__) . DIRECTORY_SEPARATOR .
-			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'datasets' . DIRECTORY_SEPARATOR .
@@ -80,10 +79,10 @@ class ConfigCacheLoaderTest extends MockedTest
 			->at($this->root->getChild('config'))
 			->setContent(file_get_contents($file));
 
-		$configCacheLoader = new ConfigCacheLoader($this->root->url(), $this->mode);
+		$configFileLoader = new ConfigFileLoader($this->root->url(), $this->mode);
 		$configCache = new ConfigCache();
 
-		$configCacheLoader->loadConfigFiles($configCache);
+		$configFileLoader->setupCache($configCache);
 
 		$this->assertEquals('testhost', $configCache->get('database', 'hostname'));
 		$this->assertEquals('testuser', $configCache->get('database', 'username'));
@@ -102,7 +101,6 @@ class ConfigCacheLoaderTest extends MockedTest
 		$this->delConfigFile('local.config.php');
 
 		$file = dirname(__DIR__) . DIRECTORY_SEPARATOR .
-			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'datasets' . DIRECTORY_SEPARATOR .
@@ -113,10 +111,10 @@ class ConfigCacheLoaderTest extends MockedTest
 			->at($this->root->getChild('config'))
 			->setContent(file_get_contents($file));
 
-		$configCacheLoader = new ConfigCacheLoader($this->root->url(), $this->mode);
+		$configFileLoader = new ConfigFileLoader($this->root->url(), $this->mode);
 		$configCache = new ConfigCache();
 
-		$configCacheLoader->loadConfigFiles($configCache);
+		$configFileLoader->setupCache($configCache);
 
 		$this->assertEquals('testhost', $configCache->get('database', 'hostname'));
 		$this->assertEquals('testuser', $configCache->get('database', 'username'));
@@ -134,21 +132,20 @@ class ConfigCacheLoaderTest extends MockedTest
 		$this->delConfigFile('local.config.php');
 
 		$file = dirname(__DIR__) . DIRECTORY_SEPARATOR .
-			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'datasets' . DIRECTORY_SEPARATOR .
 			'config' . DIRECTORY_SEPARATOR .
-			'.htconfig.test.php';
+			'.htconfig.php';
 
 		vfsStream::newFile('.htconfig.php')
 			->at($this->root)
 			->setContent(file_get_contents($file));
 
-		$configCacheLoader = new ConfigCacheLoader($this->root->url(), $this->mode);
+		$configFileLoader = new ConfigFileLoader($this->root->url(), $this->mode);
 		$configCache = new ConfigCache();
 
-		$configCacheLoader->loadConfigFiles($configCache);
+		$configFileLoader->setupCache($configCache);
 
 		$this->assertEquals('testhost', $configCache->get('database', 'hostname'));
 		$this->assertEquals('testuser', $configCache->get('database', 'username'));
@@ -160,7 +157,7 @@ class ConfigCacheLoaderTest extends MockedTest
 		$this->assertEquals('Europe/Berlin', $configCache->get('system', 'default_timezone'));
 		$this->assertEquals('fr', $configCache->get('system', 'language'));
 
-		$this->assertEquals('admin@friendica.local', $configCache->get('config', 'admin_email'));
+		$this->assertEquals('admin@test.it', $configCache->get('config', 'admin_email'));
 		$this->assertEquals('Friendly admin', $configCache->get('config', 'admin_nickname'));
 
 		$this->assertEquals('/another/php', $configCache->get('config', 'php_path'));
@@ -184,7 +181,6 @@ class ConfigCacheLoaderTest extends MockedTest
 		vfsStream::create($structure, $this->root);
 
 		$file = dirname(__DIR__) . DIRECTORY_SEPARATOR .
-			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'datasets' . DIRECTORY_SEPARATOR .
@@ -195,9 +191,9 @@ class ConfigCacheLoaderTest extends MockedTest
 			->at($this->root->getChild('addon')->getChild('test')->getChild('config'))
 			->setContent(file_get_contents($file));
 
-		$configCacheLoader = new ConfigCacheLoader($this->root->url(), $this->mode);
+		$configFileLoader = new ConfigFileLoader($this->root->url(), $this->mode);
 
-		$conf = $configCacheLoader->loadAddonConfig('test');
+		$conf = $configFileLoader->loadAddonConfig('test');
 
 		$this->assertEquals('testhost', $conf['database']['hostname']);
 		$this->assertEquals('testuser', $conf['database']['username']);
diff --git a/tests/src/Util/Config/ConfigFileSaverTest.php b/tests/src/Util/Config/ConfigFileSaverTest.php
new file mode 100644
index 000000000..04adf6014
--- /dev/null
+++ b/tests/src/Util/Config/ConfigFileSaverTest.php
@@ -0,0 +1,189 @@
+<?php
+
+namespace Friendica\Test\src\Util\Config;
+
+use Friendica\App;
+use Friendica\Core\Config\Cache\ConfigCache;
+use Friendica\Test\MockedTest;
+use Friendica\Test\Util\VFSTrait;
+use Friendica\Util\Config\ConfigFileLoader;
+use Friendica\Util\Config\ConfigFileSaver;
+use Mockery\MockInterface;
+use org\bovigo\vfs\vfsStream;
+
+class ConfigFileSaverTest extends MockedTest
+{
+	use VFSTrait;
+
+	/**
+	 * @var App\Mode|MockInterface
+	 */
+	private $mode;
+
+	protected function setUp()
+	{
+		parent::setUp();
+		$this->setUpVfsDir();
+		$this->mode = \Mockery::mock(App\Mode::class);
+		$this->mode->shouldReceive('isInstall')->andReturn(true);
+	}
+
+	public function dataConfigFiles()
+	{
+		return [
+			'config' => [
+				'fileName' => 'local.config.php',
+				'filePath' => dirname(__DIR__) . DIRECTORY_SEPARATOR .
+					'..' . DIRECTORY_SEPARATOR .
+					'..' . DIRECTORY_SEPARATOR .
+					'datasets' . DIRECTORY_SEPARATOR .
+					'config',
+				'relativePath' => 'config',
+			],
+			'ini' => [
+				'fileName' => 'local.ini.php',
+				'filePath' => dirname(__DIR__) . DIRECTORY_SEPARATOR .
+					'..' . DIRECTORY_SEPARATOR .
+					'..' . DIRECTORY_SEPARATOR .
+					'datasets' . DIRECTORY_SEPARATOR .
+					'config',
+				'relativePath' => 'config',
+			],
+			'htconfig' => [
+				'fileName' => '.htconfig.php',
+				'filePath' => dirname(__DIR__) . DIRECTORY_SEPARATOR .
+					'..' . DIRECTORY_SEPARATOR .
+					'..' . DIRECTORY_SEPARATOR .
+					'datasets' . DIRECTORY_SEPARATOR .
+					'config',
+				'relativePath' => '',
+			],
+		];
+	}
+
+	/**
+	 * Test the saveToConfigFile() method
+	 * @dataProvider dataConfigFiles
+	 *
+	 * @todo 20190324 [nupplaphil] for ini-configs, it isn't possible to use $ or ! inside values
+	 */
+	public function testSaveToConfig($fileName, $filePath, $relativePath)
+	{
+		$this->delConfigFile('local.config.php');
+
+		if (empty($relativePath)) {
+			$root = $this->root;
+			$relativeFullName = $fileName;
+		} else {
+			$root = $this->root->getChild($relativePath);
+			$relativeFullName = $relativePath . DIRECTORY_SEPARATOR . $fileName;
+		}
+
+		vfsStream::newFile($fileName)
+			->at($root)
+			->setContent(file_get_contents($filePath . DIRECTORY_SEPARATOR . $fileName));
+
+		$configFileSaver = new ConfigFileSaver($this->root->url());
+		$configFileLoader = new ConfigFileLoader($this->root->url(), $this->mode);
+		$configCache = new ConfigCache();
+		$configFileLoader->setupCache($configCache);
+
+		$this->assertEquals('admin@test.it', $configCache->get('config', 'admin_email'));
+		$this->assertEquals('frio', $configCache->get('system', 'theme'));
+		$this->assertNull($configCache->get('config', 'test_val'));
+		$this->assertNull($configCache->get('system', 'test_val2'));
+
+		// update values (system and config value)
+		$configFileSaver->addConfigValue('config', 'admin_email', 'new@mail.it');
+		$configFileSaver->addConfigValue('system', 'theme', 'vier');
+
+		// insert values (system and config value)
+		$configFileSaver->addConfigValue('config', 'test_val', 'Testingwith@all.we can');
+		$configFileSaver->addConfigValue('system', 'test_val2', 'TestIt First');
+
+		// overwrite value
+		$configFileSaver->addConfigValue('system', 'test_val2', 'TestIt Now');
+
+		// save it
+		$this->assertTrue($configFileSaver->saveToConfigFile());
+
+		$newConfigCache = new ConfigCache();
+		$configFileLoader->setupCache($newConfigCache);
+
+		$this->assertEquals('new@mail.it', $newConfigCache->get('config', 'admin_email'));
+		$this->assertEquals('Testingwith@all.we can', $newConfigCache->get('config', 'test_val'));
+		$this->assertEquals('vier', $newConfigCache->get('system', 'theme'));
+		$this->assertEquals('TestIt Now', $newConfigCache->get('system', 'test_val2'));
+
+		$this->assertTrue($this->root->hasChild($relativeFullName));
+		$this->assertTrue($this->root->hasChild($relativeFullName . '.old'));
+		$this->assertFalse($this->root->hasChild($relativeFullName . '.tmp'));
+
+		$this->assertEquals(file_get_contents($filePath . DIRECTORY_SEPARATOR . $fileName), file_get_contents($this->root->getChild($relativeFullName . '.old')->url()));
+	}
+
+	/**
+	 * Test the saveToConfigFile() method without permissions
+	 * @dataProvider dataConfigFiles
+	 */
+	public function testNoPermission($fileName, $filePath, $relativePath)
+	{
+		$this->delConfigFile('local.config.php');
+
+		if (empty($relativePath)) {
+			$root = $this->root;
+			$relativeFullName = $fileName;
+		} else {
+			$root = $this->root->getChild($relativePath);
+			$relativeFullName = $relativePath . DIRECTORY_SEPARATOR . $fileName;
+		}
+
+		$root->chmod(000);
+
+		vfsStream::newFile($fileName)
+			->at($root)
+			->setContent(file_get_contents($filePath . DIRECTORY_SEPARATOR . $fileName));
+
+		$configFileSaver = new ConfigFileSaver($this->root->url());
+
+		$configFileSaver->addConfigValue('system', 'test_val2', 'TestIt Now');
+
+		// wrong mod, so return false if nothing to write
+		$this->assertFalse($configFileSaver->saveToConfigFile());
+	}
+
+	/**
+	 * Test the saveToConfigFile() method with nothing to do
+	 * @dataProvider dataConfigFiles
+	 */
+	public function testNothingToDo($fileName, $filePath, $relativePath)
+	{
+		$this->delConfigFile('local.config.php');
+
+		if (empty($relativePath)) {
+			$root = $this->root;
+			$relativeFullName = $fileName;
+		} else {
+			$root = $this->root->getChild($relativePath);
+			$relativeFullName = $relativePath . DIRECTORY_SEPARATOR . $fileName;
+		}
+
+		vfsStream::newFile($fileName)
+			->at($root)
+			->setContent(file_get_contents($filePath . DIRECTORY_SEPARATOR . $fileName));
+
+		$configFileSaver = new ConfigFileSaver($this->root->url());
+		$configFileLoader = new ConfigFileLoader($this->root->url(), $this->mode);
+		$configCache = new ConfigCache();
+		$configFileLoader->setupCache($configCache);
+
+		// save nothing
+		$this->assertTrue($configFileSaver->saveToConfigFile());
+
+		$this->assertTrue($this->root->hasChild($relativeFullName));
+		$this->assertFalse($this->root->hasChild($relativeFullName . '.old'));
+		$this->assertFalse($this->root->hasChild($relativeFullName . '.tmp'));
+
+		$this->assertEquals(file_get_contents($filePath . DIRECTORY_SEPARATOR . $fileName), file_get_contents($this->root->getChild($relativeFullName)->url()));
+	}
+}
diff --git a/update.php b/update.php
index e619ec89d..8626ed299 100644
--- a/update.php
+++ b/update.php
@@ -1,5 +1,6 @@
 <?php
 
+use Friendica\BaseObject;
 use Friendica\Core\Addon;
 use Friendica\Core\Config;
 use Friendica\Core\L10n;
@@ -346,3 +347,17 @@ function update_1298()
 	}
 	return Update::SUCCESS;
 }
+
+/**
+ * @see https://github.com/friendica/friendica/pull/6920
+ * @return int Success
+ */
+function update_1305()
+{
+	$app = BaseObject::getApp();
+	if (Update::saveConfigToFile($app->getBasePath(), $app->getMode())) {
+		return Update::SUCCESS;
+	} else {
+		return Update::FAILED;
+	}
+}
diff --git a/view/templates/admin/site.tpl b/view/templates/admin/site.tpl
index bc5e34c3c..6da3e35f5 100644
--- a/view/templates/admin/site.tpl
+++ b/view/templates/admin/site.tpl
@@ -46,7 +46,6 @@
     <input type='hidden' name='form_security_token' value='{{$form_security_token}}'>
 
 	{{include file="field_input.tpl" field=$sitename}}
-	{{include file="field_input.tpl" field=$hostname}}
 	{{include file="field_input.tpl" field=$sender_email}}
 	{{include file="field_textarea.tpl" field=$banner}}
 	{{include file="field_input.tpl" field=$shortcut_icon}}
@@ -125,7 +124,6 @@
 	{{include file="field_input.tpl" field=$optimize_fragmentation}}
 	{{include file="field_input.tpl" field=$abandon_days}}
 	{{include file="field_input.tpl" field=$temppath}}
-	{{include file="field_input.tpl" field=$basepath}}
 	{{include file="field_checkbox.tpl" field=$suppress_tags}}
 	{{include file="field_checkbox.tpl" field=$nodeinfo}}
 	{{include file="field_select.tpl" field=$check_new_version_url}}
diff --git a/view/templates/local.config.tpl b/view/templates/local.config.tpl
index c4c4afba4..3201a9985 100644
--- a/view/templates/local.config.tpl
+++ b/view/templates/local.config.tpl
@@ -29,6 +29,7 @@ return [
 	],
 	'system' => [
 		'urlpath' => '{{$urlpath}}',
+		'basepath' => '{{$basepath}}',
 		'default_timezone' => '{{$timezone}}',
 		'language' => '{{$language}}',
 	],