can you do a factory reset?
Download 1850 again and reinstall, maybe your download was damaged.
---------- Post added at 08:03 PM ---------- Previous post was at 07:57 PM ----------
I found it
https://docs.google.com/uc?id=0B_6QKfNbqOAmSUtod1UyYjVwc1k&export=download
Thanks, I will download this version and try it with that. I did factory reset but still nothing changed.
Hopefully i get it to work with 850 and then i try to upgrade back to 1850.2