alright,so I bought a iPhone 3GS from someone who had att so I had it unlocked/jailbroken to work for another service(SIMPLE MOBILE) and it worked. but then I tried to update it from its 4.1 to 5(which was available on itunes) and now it is stuck on the configure screen.I can only get as far as when it says "Activating your iPhone" then it while say there's a problem.so I need some help with this problem ASAP! thank you if your able to help.I am real frustrated with this problem.