[Q] How to fix XXXX basebamd ???? topic

I've got an S3 mini (i9180) and after flashing CM11 (It wasnt my first time) i lost this and now i cant make any mobile connection... I tried flashing back its factory rom but it isnt still fixed... It shows baseband version as xxxx... Please Help!!! :mad::confused::(
Thanks in forward for any replies! ;)