System update installation steps:（Android 11 to Android 13）
PS: Make sure your car radio is connected to a stable power source.
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Go to the car stereo manufacturer's website and download the software update file called "update.zip". Save them to your computer.
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Place the software update file on a USB stick and insert the USB stick into the USB port on the car stereo.
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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”.
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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