hey i just got an iphone 4S from my cousin who forgot his password, but the thing is i want to restore it but i dnt know what os was it on and i dnt want to update it to 6.1.3, it is officially unlocked but i wanna be able to jailbreak it, is there any way of knowing what is the os??? FYI: it displays iphone is locked and i cant access it in itunes and i tried getting SHSH blobs via redsnow but it says its not supported for 4S, and tiny umbrella wouldnt read it!!! help 