Install LineageOS on d801

Special Requirements

Basic requirements

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

Rooting your device

1. Root your device by following this guide.

Downgrading bootloader

In order to be able to boot a custom recovery and LineageOS you need to downgrade your bootloader.

1. Download the relevant files for your device variant from here.
2. Place aboot.bin and laf.bin on the root of /sdcard:
   • Using adb:

     adb push aboot.bin /sdcard/aboot.bin
     adb push laf.bin /sdcard/laf.bin
     

3. Now, open an adb shell from a command prompt (on Windows) or terminal (on Linux or macOS) window. In that shell, type the following commands:

   su
   dd if=/sdcard/aboot.bin of=/dev/block/platform/msm_sdcc.1/by-name/aboot
   dd if=/sdcard/laf.bin of=/dev/block/platform/msm_sdcc.1/by-name/laf
   

Installing a custom recovery using dd

1. Download a custom recovery - you can download Lineage Recovery. Simply download the latest recovery file, named something like lineage-17.1-20210217-recovery-d801.img.

2. Place the recovery image file on the root of /sdcard:
   • Using adb: adb push <recovery_filename>.img /sdcard/<recovery_filename>.img
   check

   Tip: The file may not be named identically to what stands in this command, so adjust accordingly.
   • You can use any method you are comfortable with. adb is universal across all devices, and works both in Android and recovery mode, providing USB debugging is enabled.
3. Now, open an adb shell from a command prompt (on Windows) or terminal (on Linux or macOS) window. In that shell, type the following commands:

   su
   dd if=/sdcard/<recovery_filename>.img of=/dev/block/platform/msm_sdcc.1/by-name/recovery
   

4. Reboot into recovery.
   • From the same shell, type the following command:

     reboot recovery
     

Installing LineageOS from recovery

1. Download the LineageOS installation package that you would like to install or build the package yourself.
   • Optionally, download an application package add-on such as Google Apps (use the arm architecture).
2. If you are not in recovery, reboot into recovery:

   • With the device powered off and usb unplugged, hold Volume Down + Power. When the LG logo appears, release both buttons and hold Volume Up + Volume Down.

     info_outline

     Note: Accept the factory reset prompt using the hardware buttons. If you have done everything correctly, this will not actually reset your device but instead will boot the custom recovery.
3. Now tap Factory Reset, then Format data / factory reset and continue with the formatting process. This will remove encryption and delete all files stored in the internal storage, as well as format your cache partition (if you have one).
4. Return to the main menu.
5. Sideload the LineageOS .zip package:
   • On the device, select “Apply Update”, then “Apply from ADB” to begin sideload.
   • On the host machine, sideload the package using: adb sideload filename.zip.
     check

     Tip: If the process succeeds the output will stop at 47% and report adb: failed to read command: Success.

6. (Optionally): If you want to install any add-ons, repeat the sideload steps above for those packages in sequence.

   info_outline

   Note: Add-ons aren’t signed with LineageOS’s official key, and therefore when they are sideloaded, Lineage Recovery will present a screen that says Signature verification failed, this is expected, please click Continue.
   info_outline

   Note: If you want the Google Apps add-on on your device, you must follow this step before booting into LineageOS for the first time!
7. Once you have installed everything successfully, click the back arrow in the top left of the screen, then “Reboot system now”.

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.