i have an iphone 3gs and its on 3.1.3 but i want it on like 4.0?

Christopher

New member
i have an iphone 3gs and its on 3.1.3 but i want it on like 4.0 so i can get multi task and the other ios 4.0 things how do i do this while still being able to unlock/jailbreak because i use tmo and cant get 4.1
 
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