i have a iphone 3gs 3.0.1 and it's unlocked. Is there anyway i can upgrade to 3.1.2 if there's can someone please tell me how to do that or can i just restore and keep my firmware 3.0.1. I have too much stuff on my iphone i want to do a restore and keep my firmware 3.1.2 or under so i can unlock it again... someone please tell me how to restore without update to 3.1.3. Thank you