I want to jailbreak my iphone so I can get myfi and all those cool apps. I am scared I mess it up. It is a 3gs, but it is an expensive phone. If I would jailbreak it and it goes wrong, can I restore it so it won't stay messed up? Kinda like you restore a laptop with f11. I did jailbreak my wii, so I am sure no errors will occur, but it is just a question.