Problem: I just restored to 4.3.3 in iTunes via redsn0w "pwnd DFU" mode. Then I jailbroke it and now it says "The sim card inserted in this iphone does not appear to be supported" I'm just confused. I can't seem to activate this iPhone and get it off the iTunes screen. Things I've tried: I have tried multiple SIM cards, even AT&T SIM cards that work fine in other iPhone 4's. I've tried different SIM card trays, different cables, mac and PC. Anyone ever heard of this?