Install LineageOS on g2m

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Warning: These instructions only work if you follow every section and step precisely.
Do not continue after something fails!

Basic requirements

Read through the instructions at least once before actually following them, so as to avoid any problems due to any missed steps!
Make sure your computer has adb. Setup instructions can be found here.
Enable USB debugging on your device.

Rooting your device

Important: The device must be rooted before proceeding any further.

Root your device by following this guide.

Installing a custom recovery using `dd`

Download a custom recovery - you can download one here.
Place the recovery image file on the root of /sdcard:
- Using adb: adb push <recovery_filename>.img /sdcard/<recovery_filename>.img
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.
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
```
Reboot into recovery.
- From the same shell, type the following command:
```
reboot recovery
```

Installing LineageOS from recovery

Build a LineageOS installation package.
- (Optionally): If you want to install an application package add-on such as Google Apps (use the arm architecture), please read and follow the instructions on Google Apps page
If you are not in recovery, reboot into recovery:
- With the device powered off, hold Volume Down + Power. When the LG logo appears, release both buttons and then hold them again. Choose ‘Yes’ twice to confirm.
  
  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.
Now tap Wipe.
Now tap Format Data and continue with the formatting process. This will remove encryption and delete all files stored in the internal storage.
Return to the previous menu and tap Advanced Wipe, then select the Cache and System partitions and then Swipe to Wipe.
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.
  Tip: Normally, adb will report Total xfer: 1.00x, but in some cases, even if the process succeeds the output will stop at 47% and report adb: failed to read command: Success. In some cases it will report adb: failed to read command: No error or adb: failed to read command: Undefined error: 0 which is also fine.
(Optionally): If you want to install any add-ons, repeat the sideload steps above for those packages in sequence.

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

Note: The first boot usually takes no longer than 15 minutes, depending on the device. If it takes longer, you may have missed a step, otherwise feel free to get assistance

Warning: Depending on which recovery you use, you may be prompted to install additional apps and services. We strongly advise you to opt out of installing these, as they may cause your device to bootloop, as well as attempt to access or corrupt your data.

Get assistance

After you’ve double checked that you followed the steps precisely, didn’t skip any and still have questions or got stuck, feel free to ask on our subreddit or in #LineageOS on Libera.Chat.