k750i can't make/accept calls after unlock

[popzoran]

Hi,
I unlocked my k750i from 02 in order to use it with vodafone but now i can't make any calls.
It will accept the sim normally but when i try to call i get that 3 tone sound that you get when out of range and just get back to the menu. No error messages or anything.

Any ideas?

Cheers

Try to flash GDFS zone, maybe corrupted.