Install OkcarOS on
Radxa Zero (Android TV)

radxa0

警告: The provided instructions are for OkcarOS 20. These will 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 and fastboot. Setup instructions can be found here.
Enable USB debugging on your device.
Boot your device with the stock OS at least once and check every functionality.
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

This generation of Amlogic devices include a unique boot mode called “Burn Mode”. aml-flash-tool is Radxa’s wrapper script for Amlogic’s official update tool, which allows interfacing with burn mode. It’s only available for Linux, though a VM will suffice.

Flashing the initial image and firmware using `update`

注意: Please note regardless of the board you have, this firmware requires an eMMC module and will not work with only an SD Card. We will not change this due to performance requirements.

Download aml_install_package.img file from here.
Power off the device, and boot it into burn mode:
- Press and hold the USB BOOT button on the board, and plug into your PC.
Download and install aml-flash-tool:
```
git clone https://github.com/radxa/aml-flash-tool.git
cd aml-flash-tool
sudo ./INSTALL.sh
```
注意: Please note this will require your user’s sudo password, as the script requires direct hardware access, which requires root privileges.
Flash the downloaded image file to your device by running (replace <aml_install_package.img> with the actual filename!):
```
sudo ./aml-flash-tool.sh <aml_install_package.img>
```
注意: These flash packages were built by OkcarOS maintainers from officially supported OkcarOS repositories, by using lunch to select the device, then run m aml_install.

警告: Please note that both aml-flash-tool and update are known to be somewhat finicky on specific host platforms (e.g. AMD machines). If you see any failures in flashing, return to step 2 and try again.
The script will flash the firmware, and after you see Resetting board [OK], cycle power to the board, at which point you will see OkcarOS Recovery boot. You may now proceed with the following installation instructions.

Installing OkcarOS from recovery

Download the OkcarOS installation package that you would like to install or build the package yourself.
- (Optionally): If you want to install Google Apps add-on package (use the arm architecture), you can download it from here.
If you are not in recovery, reboot into recovery:
- Run adb reboot recovery.
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).
Return to the main menu.
Sideload the OkcarOS .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.
  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

注意: If you don’t want to install any add-on (such as Google Apps), you can skip this whole section!

注意: Add-ons aren’t signed with OkcarOS’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.

警告: If you want the Google Apps add-on on your device, you must follow this step before booting into OkcarOS for the first time!

Click Apply Update, then Apply from ADB, then adb -d sideload filename.zip for all desired packages in sequence.

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”.

注意: 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.

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 #OkcarOS on Libera.Chat.

Install OkcarOS on Radxa Zero (Android TV)