I took a chance and pulled the trigger on this unit:
https://www.aliexpress.com/item/New-...ceBeautifyAB=0
It is a 32G ROM, 2GB model running Android 7.1. Otherwise, appears to be similar/same unit AVIN is selling including the BMW ID6 interface. It's a gamble. Don't know how their support will be. I'll report in when I receive it.