After installing Ubuntu, you can reinstall Android (which removes Ubuntu).
Warning: All Ubuntu apps and data, including user-generated data, are deleted.
At any time you can download the Android files needed to restore your system.
This table displays links to common Android images:
|Device||Android images by type|
|Nexus 7 2013 WiFi||razor|
|Galaxy Nexus||takju or yakju|
|Nexus 7||nakasi or nakasig|
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
- Move into the extract directory, for example:
$ cd razor-kot49h
- Connect the device to your Ubuntu Desktop over USB.
- Ensure adb lists the device:
$ adb devices List of devices attached 025d138e2f521413 device
- Reboot the device into bootloader mode:
$ 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.
- Run the flash-all.sh command (in the image extract directory):
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
- Move into the directory that contains your
- Restore the
backup.abfile 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
- Lock the device:
$ fastboot oem lock
- Reboot into Android:
$ fastboot reboot