No gsm signal on D3

[lerian]

Hello, to everyone from Greece, I have my D3 for about a month and was very happy with it till I decided, without any reading, knowledge or research to insert ICS android 4 on it. And the "disaster" began I lost my gsm signal I have made several attempts to connect but I do not get a responce. Since then I have been reading and searching all over the net and can't find someone who had the same problem. The rest of the function are ok on both GB and CN but both have no gsm. I even dialed *#*#4636#*#* to see if cdma is locked and if I can get a reading, but nothing... and the only radio mode I can get is USA Band.
Thank you for your time and I hope someone could help, because I love my phone and want it back working again.

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