I had a very similar experience as you!
I tried updating from Ford to the current 3.0. But then my screen went black and no other fixes worked.
What I found fixed it, was the CyanLabs files for mine to update to 3.4
I did their USB install. My thought is that the Ford update used all the memory in the system and it couldn’t complete. Something about the way Cyan Labs formatted/deleted the Ford shit and then installed seemed to clear mine right up.
Hope that helps. That’s how I fixed my mine with the exact issues you’re having but on my F-150.
Good luck.