I'd like to update my jailbroken iPod 3G (3.1.3) to iOS4 but I'm not one hundred percent sure of the process. This is what I would do: -Backup my iPod to iTunes -Download 4.0 firmware -Shift click restore and choose that firmware file *At this point should I choose to restore from backup or a clean install?* -Re-jailbreak once the new spirit is released Would this work properly and would I get a fully functioning install of iOS4? If I choose to restore from backup, could this affect performance? Would I lose all app data (saved games, high scores...) when I restore? Am I forgetting anything?