I am planning on buying a new 3GS for use in Costa Rica (thus needing to be unlocked) however I am aware that if the phone is in 3.1 then there is no way to unlock it (for now). Does anybody know if the iPhone 3GS's currently sold at stores come loaded with 3.0 (thus unlockable) or 3.1? Alternatively, is there any way to know from the serial number?
Thanks
Thanks