I have the Wifi-only Gemini PDA. Surprisingly it's the least popular
model of the (already obsolete) Gemini. So over-the-air update does not
work here (it work only for 3G models for some reason).
I can only re-flash the whole device it I want to upgrade from Android
7 to Android 8. Well, I should postpone this task..
I don't need this device too much. But Nextbike bikes are ready and
trey require Android device to use them...
