Hey everyone! I know this is a very stupid question and the answer is obviously to restore in iTunes but I wanted to clarify.. It is an iPhone 4 (4.0.1) jailbroken with Jailbreakme.com and unlocked with Ultrasn0w. The person who wants to buy it wants it locked, which is the proper way to restore with the ability to possibility to jailbreak/unlock in the future? Thanks for taking the time to answer this question even it's really standard and simple, I just wanted to make sure before doing anything. Thanks again!