GEVEY Supreme will work for iOS version 4.1, 4.2, 4.2.1, 4.3, 4.3.1, 4.3.2, 4.3.3 4.3.4 4.3.5, 5.0 with baseband with B01.59.00, 2.10.04, 3.10.01, 4.10.01. Any Fimrware past 4.11.XX will not work ie, 4.11.08 will not work.