System update installation steps:（Android 11 to Android 13）

PS: Make sure your car radio is connected to a stable power source.

1. Go to the car stereo manufacturer's website and download the software update file called "update.zip". Save them to your computer.

2. Place the software update file on a USB stick and insert the USB stick into the USB port on the car stereo.

3. Follow the instructions on your car stereo to install the software update. Note: Do not select "Erase Data and Format Flash" during the update process. Just tap “install”.

4. The Android 13 system will start downloading and installing. This may take 4 to 5 minutes depending on how your car radio works. After rebooting it will be updated to Android 13.

System files download link: https://mega.nz/folder/uSIVgRyb#DE2UMkfvyHbVXgGKNg6k4Q