Thanks, I have reflashed the current 4.3 rom UEMK9 and a slightly older UEMK4 with a DEMJ9 radio.
I have tried lots of radios - DM3, XXDME4, XXMI6, XXMJ5, XXMJ2, and some other modem.bin
From what I understand its when you go from newer to older roms that you get IMEI problems, so its prob useless to try pre 4.3
Its all a bit confusing to me and which rom has which radio seems like an arcane mystery.
It is quite possible that I flashed a same version 4.3 rom but my old radio was different and not knowing it was such a minefield on Galaxy phones I never checked that or bothered with a back up.
I may have to resort to paying the people at unlocksamsung online £26 to reset my IMEI
Can anyone tell me, is it just the radio that causes the IMEI problem and should I just trawl through flashing radio zips until my IMEI comes back so I can save the efs file?
BTY everything else seems ok SN is correct and wifi works fine, I just can't get on a network without my correct IMEI