[Q][GSM] restore radio in droid 4
Hi I have a droid 4. I bought it in the USA and used it only in Italy. It was rooted and unlocked and it has always been working fine over GSM and 3G. Then I decided to install CM 10.2.1 and then i upgraded it to CM 11. In both cases sending sms was not working (calls and internet fine). Trying to fix it I went also in the *#*#4636#*#* testing menu and changed setting of radio. But now I cannot restore it and I always get no signal. Both with CM but also booting from Stock ROM.
I flashed many times but still nothing. As first I'd like to have singal back to call and use the net (3G). then I'll fix sms.
Can I do a sort of radio otpion reset? or firmware reset?
Plese help! Thank you!
IF there is some better section (or forum) just tell, I guess it can be a common issue and not specific for D4.