Install LineageOS on kuntao

Basic requirements

  1. Make sure your computer has adb and fastboot. Setup instructions can be found here.
  2. Enable USB debugging on your device.

Unlocking the bootloader

  1. Enable OEM unlock in the Developer options under device Settings, if present.
  2. Accept the terms that you understand that you’re voiding your warranty by choosing to unlock your bootloader.
  3. Login with your Lenovo account (if you already have one) or create a new one.
  4. A 14 days countdown timer will start. This is specific per device.
  5. After the waiting period, go back to OEM unlocking so that the Lenovo servers can toggle the bootloader unlock switch.

  6. Connect the device to your PC via USB.
  7. On the computer, open a command prompt (on Windows) or terminal (on Linux or macOS) window, and type:
    adb reboot bootloader
    

    You can also boot into fastboot mode via a key combination:

    • With the device powered off, hold Volume Down + Power.
  8. Once the device is in fastboot mode, verify your PC finds it by typing:
    fastboot devices
    
  9. Now type the following command to unlock the bootloader:

    fastboot oem unlock
    
  10. If the device doesn’t automatically reboot, reboot it. It should now be unlocked.
  11. Since the device resets completely, you will need to re-enable USB debugging to continue.

Installing a custom recovery using fastboot

  1. Download a custom recovery - you can download one here.

  2. Connect your device to your PC via USB.
  3. On the computer, open a command prompt (on Windows) or terminal (on Linux or macOS) window, and type:
    adb reboot bootloader
    

    You can also boot into fastboot mode via a key combination:

    • With the device powered off, hold Volume Down + Power.
  4. Once the device is in fastboot mode, verify your PC finds it by typing:
    fastboot devices
    
  5. Flash recovery onto your device:
    fastboot flash recovery <recovery_filename>.img
    
  6. Now reboot into recovery to verify the installation:
    • With the device powered off, hold Volume Up + Volume Down + Power.

    Alternatively, on some devices and recoveries you can use fastboot to boot directly into the freshly flashed or any other desired recovery:

    fastboot boot <recovery_filename>.img
    

Installing LineageOS from recovery

  1. Download the LineageOS installation package that you would like to install or build the package yourself.

    • Optionally, download additional application packages such as Google Apps (use the arm64 architecture).
  2. If you are not in recovery, reboot into recovery:
    • With the device powered off, hold Volume Up + Volume Down + Power.
  3. Now tap Wipe.
  4. Now tap Format Data and continue with the formatting process. This will remove encryption and delete all files stored in the internal storage.

  5. Return to the previous menu and tap Advanced Wipe, then select the Cache and System partitions and then Swipe to Wipe.

  6. Sideload the LineageOS .zip package:
    • On the device, select “Advanced”, “ADB Sideload”, then swipe to begin sideload.
    • On the host machine, sideload the package using: adb sideload filename.zip
  7. (Optionally): If you want to install any additional add-ons, adb sideload filename.zip those packages in sequence.

  8. (Optional): Root your device by installing LineageOS’ AddonSU, (use the arm64 package) or by using any other method you prefer.
  9. Once you have installed everything successfully, run ‘adb reboot’.

Get assistance

If you have any questions or get stuck on any of the steps, feel free to ask on our subreddit or in #LineageOS on freenode.