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When I upgraded to the 4.0 software and then downgraded back to 3.1.2 unlocking using blackra1n and now the iPhone wont find any carrier and my number seems to be unknown. The Phone wont let me make a call, after a second it goes to the call back button. I heard from my friend that it might be that apple found out that i was unlocking the iPhone and locked the phone from the iPhone. Please help?
Sounds like your phone is bricked. Check this out, it might help: http://haveMacwillblog.com/2010/02/07/ho…