Never got the imei 0 issue, but only connected to 2g edge. I restored with the provided qcn, and now at least it says it connects to 3g and lte BUT it doesn't transfer data.
Could it be that the imei is blacklisted? (there is no way i can check that in my country)
I can make, receive calls and sms, plus i can navigate with 2g, so i think that's not the issue.
I've tried flashing a couple of radios but they make no difference.
Also, i've noticed my qcn backup file is smaller (734kb) than the provided one (773kb). I've tried backing up several times, and they always end up on that size. Can this issue have anything to do?