I have an iphone 3gs running on the 3.12 software and it is jailbroken with blackrain. Im curious if I should restore my iphone before I go in case they want to see my phone for anything. If not should I install 3.13 software jailbreak using spirit and then wait for the 4.0 jailbreak? Im a totally noob to this. My teacher at school whom knew much on the subject did the jailbreak and everything for me, but schools out so I am not able to go to him. Any help would much appreciated.