Install LineageOS on
NVIDIA Jetson (AGX Xavier / Xavier NX) [Tablet]

Basic requirements

1. Read through the instructions at least once before actually following them, so as to avoid any problems due to any missed steps!
2. Make sure your computer has adb and fastboot. Setup instructions can be found here.
3. Enable USB debugging on your device.
4. Make sure that your model is actually listed in the “Supported models” section here (exact match required!)
5. Boot your device with the stock OS at least once and check every functionality.
6. LineageOS is provided as-is with no warranty. While we attempt to verify everything works you are installing this at your own risk!

Preparing for installation

Tegra devices come with a unique boot mode called “Tegra ReCovery Mode” or RCM, also known as APX. Tegraflash is the official NVIDIA tool for interfacing with RCM mode on recent Tegra devices. Tegraflash is only available for Linux. It will also not run properly in a VM.

Installing a custom recovery using Tegraflash

1. Download a flash package.

   • For AGX Xavier Devkit, It will be named p2972_flash_package.tar.xz. For Xavier NX Devkit, It will be named p3518_flash_package.tar.xz.
   info_outline

   Note: These flash packages were built by LineageOS Developer Aaron Kling (webgeek1234) from officially supported LineageOS repositories, using Tegraflash and device configurations from NVIDIA Linux4Tegra releases and a few custom scripts.
2. Install xz and python3. To do so, run sudo apt -y install xz-utils python3 (Debian based hosts) or dnf -y install xz-utils python3 (Redhat based hosts).

3. Run the following command in the folder which you downloaded the flash package to:

   • For AGX Xavier Devkit, tar -xvf p2972_flash_package.tar.xz. For Xavier NX Devkit, tar -xvf p3518_flash_package.tar.xz.
4. Power off the device, and boot it into download mode:
   • For AGX Xavier Devkit - With the device off, press the FRC REC button, then tap POWER. Release FRC REC once apx enumerates. For Xavier NX Devkit - With the device unplugged, jump the FRC REC pin, then plug in. Remove the jumper once apx enumerates.
5. Now, from the same terminal as before, run:

   sudo ./flash.sh
   

   info_outline

   Note: Please note this will require your user’s sudo password, as the script requires direct hardware access, which requires root privledges.
6. The script will flash the boot stack and boot directly to recovery.

Installing LineageOS from recovery

1. Build a LineageOS installation package.
2. If you are not in recovery, reboot into recovery:
   • The bootloader does not allow using hardware buttons to boot to recovery. After apx flash, the device will boot directly to recovery. After installing Lineage, normal methods can be used to reboot to 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 but do not reboot before you read/followed the rest of the instructions!
   • On the device, select “Apply Update”, then “Apply from ADB” to begin sideload.
   • On the host machine, sideload the package using: adb -d sideload filename.zip.
     check

     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.

Installing Add-Ons

1. Even though you are already in recovery, click Advanced, then Reboot to Recovery
2. When your device reboots, click Apply Update, then Apply from ADB, then adb -d sideload filename.zip for all desired packages in sequence.
   When presented with a screen that says Signature verification failed, click Continue. It is expected as add-ons aren’t signed with LineageOS’s official key!

All set!

Once you have installed everything successfully, you can now reboot your device into the OS for the first time!

• Click the back arrow in the top left of the screen, then “Reboot system now”.