Ok I have a 1st gen iphone i unlocked/jailbroke with pwnage tool. I used tmobile for awhile but there service was terrible in my area. I am going to use AT&T and the store told me I need to pick a sim card and activate it using iTunes. When I activate through itunes I assume I will lose my Cydia apps and themes etc. Will I be able to get these back if I re-jailbreak it with pwnage tool? Do I do it the same way AND when I activate with iTunes will that automatically lock it?