It sounds like you’re looking for a or updated firmware for an 8227L-based Android head unit that is currently showing “Android 12” (which is often a fake build number—these units usually run Android 6 to 10 under the hood).
The Wayback Machine - https://web.archive.org/web/20220705073752/https://boards.dingoonity.org/retro-game-350rg-350/nec-pc-9801-and-pc-9821-emulator-np2kai/
It sounds like you’re looking for a or updated firmware for an 8227L-based Android head unit that is currently showing “Android 12” (which is often a fake build number—these units usually run Android 6 to 10 under the hood).