I appologize if this is in another thread or sticky, I couldn't find an exact answer. I have early model iPhone 4 OS 4.0.1 on modem firmware 01.59.00 that I jailbroke on jailbreakme.com last summer. I'd like to unjailbreak but still be able to re-jailbreak and unlock again later, if possible I'd like to keep OS 4.0.1 or some other easy broken OS. I have my SSH files from 4.0 and 4.0.1 saved. I know I can restore in iTunes to unjailbreak, but won't that take me to the latest OS (which I assume isn't as easily jailbroken/unlocked). What should I do? Thanks in advance for you comments and advice.