I bought an iphone a while back that was 1.0.2. I updated that to 1.1.1 jailbroke it and then unlocked it AnySim (version??). I have noticed that the phone is getting really slow and I want to restore it back to Stock 1.1.1 and re-unlock it. How do i do this? Do i just go to itunes and click restore? Help needed. Can i upgrade to 1.1.2 and use it as 1.1.2?