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====== Xiaomi Mi A1 Home Key Problem ======

The **Home Key** was not longer working, **Recent/Back Key** was not working too, the **Notification Bar** could not be swiped down. I experienced this problem on my Xiaomi Mi A1 phone after I messed-up something. The origin of the problem may have been an update with the switching from A to B boot partition. The **Google Play Store** did not worked properly, preventing from installing new applications, even the **Developer options** (from //Settings// => //System//) were not longer working due the error //Developer options are not available for this user//.

Clearly some settings were messed-up, but it was not clear how to solve the problem. Fortunately I found a procedure that fixed the problem, without a factory reset.

The trick is to run the **SetupWizardUpgradeActivity** from the **com.google.android.setupwizard** app. The app may have different names upon localization, e.g. **Setup Wizard** for English or **Configurazione Android** for an Italian version.

A common recipe is to install the **Nova Launcher** app, which has a widget capable of starting an app activity, directly (see below for an alternative). Unfortunately the Google Play Store was not working too, so I had to relay on some other method to download the **apk file**. Actually I tried the [[http://apkleecher.com/|apkleecher.com]] and [[https://apps.evozi.com/apk-downloader/|apps.evozi.com]] services, which turned out to provide the very same contents into the apk archives, despite the archives itself had different checksums.

So I downloaded the Nova Launcher apk on the PC and transferred it to the phone via the **adb push** command. Then I had to allow **unknown sources** permission to the file manager app.

A preferable alternative to installing Nova Launcher, is to install **[[https://f-droid.org/en/packages/de.szalkowski.activitylauncher/|Activity Launcher]]** (available from F-Droid). This application does just what is required: add a widget to launch an app activity.

  * From the phone file manager, clik the apk archive to install the **Nova Launcher**.
  * Long tap over a free dekstop space, to add a new widget.
  * Search the Nova Launcher **Activity Widget**, and place it on the desktop.
  * Search the **Setup Wizard** (or whatever is your localized name) in the proposed list, from the sublist choose the **SetupWizardUpgradeActivity**. This app/activity is found in Android 8.1 Oreo, other versions may have different ones.
  * Now start the activity tapping the widget icon and **complete the wizard procedure**. Beware that the setup procedure may change some settings you had previously, e.g. the auto-update feature.
  * Now you can **uninstall** the Nova Launcher app.

===== Web References =====

  * **[[https://in.c.mi.com/thread-699192-1-0.html]]**
  * **[[https://in.c.mi.com/thread-699854-2-0.html]]**
  * **[[https://www.youtube.com/watch?v=UhNNhOD0wp8]]**