I'm on 4.3.3 and want to sell my iPhone 4 as both jailbroken and unlocked. My idea was to erase all settings, then re-jailbreak through jalibreakme.com, and then unlock it. "Erase All Settings" doesn't work though. It never progresses so it appears you can't do that with a jailbroken phone. I'm just afraid that if I put the phone in DFU mode in iTunes and restore it though iTunes it'll attempt to upgrade my phone to ios5 in the process and then I can't jailbreak it again. Is that true? I'm just trying to check if restoring my phone in iTunes will keep me at 4.3.3 so that I can jailbreak it again.