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My iPhone 3GS won't start so I had it restored and now it is running on fw 3.1.3 bb 5.12.01, and it's a non MC model. I did some searches for unlocking the phone and I found these solutions:
The last link has videos that talk about how you could downgrade from 3.1.3 bb 5.12.01 to 3.1.2. Has anyone tried any of these methods to unlock their iphone 3GS?