Devices - reinstalling Android

After installing Ubuntu, you can reinstall Android (which removes Ubuntu).

Warning: All Ubuntu apps and data, including user-generated data, are deleted.

Downloading Android image files

At any time you can download the Android files needed to restore your system.

This table displays links to common Android images:

From there, select the correct build version and download it.

Tip: Select the build version that was installed originally on your Android device. You can always upgrade it from inside Android.

Extract the downloaded file. For example, if the download file name is razor-kot49h-factory-ebb4918e.tgz, extract as follows:

$ tar -xzf razor-kot49h-factory-ebb4918e.tgz

$ cd razor-kot49h

$ adb devices
List of devices attached
025d138e2f521413 device

$ adb reboot bootloader

You need to be in the extract directory for the Android image you previously downloaded.

Warning: All Ubuntu apps and data are deleted.

$ ./flash-all.sh

Note: In some cases you may need to use sudo, as follows: $ sudo ./flash-all.sh

Wait. When the process is complete, Android boot to its welcome page.

If you made a backup of your Android data and apps before installing Ubuntu, you can restore it as follows:

You must first have enabled USB Debugging in the Android OS and connected your Ubuntu desktop to the device over USB (see here).
Open a terminal on your Ubuntu Desktop with Ctrl+Alt+T
Move into the directory that contains your backup.ab file.
Restore the backup.ab file to Android:

$ adb restore backup.ab

In order to install Ubuntu, the device was “unlocked”. You can optionally lock it.

Power the device off with the Power button.
Reboot into the bootloader by pressing the correct physical button combination for your device type as shown here: https://source.android.com/source/building-devices#booting-into-fastboot-mode
Ensure the device is connected in fastboot mode as follows:

$ fastboot devices
025d138e2f521413 fastboot

$ fastboot oem lock

$ fastboot reboot