The screen will turn black and boot into Android Recovery Mode. A progress bar will show the installation status.
Go to Settings > System > Reset Options > Erase All Data . This clears conflicting configurations from the older software version. Alpha Coustic Update Firmware
Visit the official distributor website where you purchased the device, or look up trusted Android automotive communities (such as XDA Developers) hosting verified Alpha Coustic repositories. The screen will turn black and boot into