diff --git a/config/global.ini.php b/config/global.ini.php
index 008b535e0fb..b5b21294bcb 100644
--- a/config/global.ini.php
+++ b/config/global.ini.php
@@ -609,6 +609,7 @@
 Plugins[] = MultiSites
 Plugins[] = Referrers
 Plugins[] = UserSettings
+Plugins[] = DevicesDetection
 Plugins[] = Goals
 Plugins[] = SEO
 Plugins[] = Events
diff --git a/core/Config.php b/core/Config.php
index 6c80734258b..1f91d554f07 100644
--- a/core/Config.php
+++ b/core/Config.php
@@ -148,16 +148,6 @@ public function setTestEnvironment($pathLocal = null, $pathGlobal = null, $pathC
         // for unit tests, we set that no plugin is installed. This will force
         // the test initialization to create the plugins tables, execute ALTER queries, etc.
         $this->configCache['PluginsInstalled'] = array('PluginsInstalled' => array());
-
-        // DevicesDetection plugin is not yet enabled by default
-        if (isset($configGlobal['Plugins'])) {
-            $this->configCache['Plugins'] = $this->configGlobal['Plugins'];
-            $this->configCache['Plugins']['Plugins'][] = 'DevicesDetection';
-        }
-        if (isset($configGlobal['Plugins_Tracker'])) {
-            $this->configCache['Plugins_Tracker'] = $this->configGlobal['Plugins_Tracker'];
-            $this->configCache['Plugins_Tracker']['Plugins_Tracker'][] = 'DevicesDetection';
-        }
     }
 
     /**
diff --git a/core/Plugin/Manager.php b/core/Plugin/Manager.php
index 03c3a9f6414..2bd01d4a8cc 100644
--- a/core/Plugin/Manager.php
+++ b/core/Plugin/Manager.php
@@ -68,7 +68,6 @@ class Manager extends Singleton
     // Plugins bundled with core package, disabled by default
     protected $corePluginsDisabledByDefault = array(
         'DBStats',
-        'DevicesDetection',
         'ExampleCommand',
         'ExampleSettingsPlugin',
         'ExampleUI',
diff --git a/core/Updates/2.4.0-b6.php b/core/Updates/2.4.0-b6.php
new file mode 100644
index 00000000000..62ab76c46e6
--- /dev/null
+++ b/core/Updates/2.4.0-b6.php
@@ -0,0 +1,24 @@
+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik\Updates;
+
+use Piwik\Updates;
+
+class Updates_2_4_0_b6 extends Updates
+{
+    public static function update()
+    {
+        $pluginManager = \Piwik\Plugin\Manager::getInstance();
+
+        try {
+            $pluginManager->activatePlugin('DevicesDetection');
+        } catch(\Exception $e) {
+        }
+    }
+}
diff --git a/core/Version.php b/core/Version.php
index 44f3a2f0f9d..358d0ee45cc 100644
--- a/core/Version.php
+++ b/core/Version.php
@@ -21,5 +21,5 @@ final class Version
      * The current Piwik version.
      * @var string
      */
-    const VERSION = '2.4.0-b5';
+    const VERSION = '2.4.0-b6';
 }
diff --git a/plugins/CoreConsole/Commands/SyncUITestScreenshots.php b/plugins/CoreConsole/Commands/SyncUITestScreenshots.php
index 0433657bf10..872b5508432 100644
--- a/plugins/CoreConsole/Commands/SyncUITestScreenshots.php
+++ b/plugins/CoreConsole/Commands/SyncUITestScreenshots.php
@@ -73,7 +73,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                     $downloadTo = "plugins/$testPlugin/tests/UI/expected-ui-screenshots/$file";
                 }
 
-                $output->write("<info>Downloading $file to $downloadTo...</info>\n");
+                $output->write("<info>Downloading $file to  $downloadTo...</info>\n");
                 Http::sendHttpRequest("$urlBase/processed-ui-screenshots/$file", $timeout = 60, $userAgent = null,
                     PIWIK_DOCUMENT_ROOT . "/" . $downloadTo);
             }
diff --git a/tests/PHPUnit/UI b/tests/PHPUnit/UI
index 1624d2874ee..4a97de9e6df 160000
--- a/tests/PHPUnit/UI
+++ b/tests/PHPUnit/UI
@@ -1 +1 @@
-Subproject commit 1624d2874eea5d6c32424ee7fb870bfc10ddb388
+Subproject commit 4a97de9e6dfa05f784d07297a4ab27f5e928c914