Does anyone know when GPP and Gevey will have the unlock sims for iOS 5.1? I know Rebel4S just came out with the iOS 5.1 unlock but it cost $49 shipped, kinda expensive... But, let's say I got the Rebel4S one, will I be able to use it in Taiwan with their carriers? I emailed Rebel4S and they said I'll have to confirm what Taiwanese carrier's IMSI CODE are. Which I don't understand what that means. Any opinions? Thanks.