Okay...
So installation success.
Boots if I first start it with the recovery mode !
I have tested many things and have more info for you:

If I start a navigation program, the compass and GPS seems not to work.
And there is not internet connection through 3G/LTE.

All other functions are working nicely.

If you can fix the above, you are my man

All right.
I have fully reinstalled the original OS and tested everything.
Now I have the ubtouch again with fully wiped data partition.

• Phone calls are now working (sound available) !
• GPS is working after ~3-5 min

What´s not working:

• Anbox with internet - I need some apps for charging my car...
• 3G/4G - must have