Long ago, i had to buy the GeveySIM card since my baseband is 04.10.01, and apprently i had no other choice. Since then, i have risked no updates, and have been working on IOS 4.3.3. My concern is, would it still work if i update to 5.0.1/5.1 ? Or, might have the problem with my baseband been fixed, and i don't need it anymore? Help would be greatly appreciated.