http://www.geekword.net/restore-ios-4.0.1/ I did a "Reset All Settings" in an attempt to fix proximity sensor problems. After doing so; 1) The set time for Password lock has 1 minute as the ONLY option 2) Visual Voicemail is not displaying at all. It just seems as if one problem leads to another. I am quite frustrated and have decided to just restore in iTunes as new. I just need to restore back to 4.0.1 for future Unlocking purposes. Can anyone confirm the steps in the link below? Will I able to re-jailbreak and unlock again? (Absolutely MUST avoid restoring to 4.0.2 or 4.1) Thank you so much for any help.