No GPS signal after updating from 3.2.18124 to 3.4.21098

I USB upgraded my 2018 raptor to 21098 and lost GPS so I tried 21194 - made it worse. Now I not only have no GPS - the system thinks it is in Michigan somewhere.
fun…lots of fun.
Now what? I am really at a loss what to do. Can I load back to 3.3 version and keep the newest version of map via USB load?
my original version was 3.3.19068 NA17