Hey, I'm running 4.3.1 jailbroken with a bunch of random tweaks and Cydia apps. The phone has become very unstable (often going into safe mode, crashing, camera not working, etc.) but I can't locate the culprit. I'd like to start fresh with iOS 5 but preserve my text messages, photos, etc. Does this stuff just clear out when I upgrade firmware or do I need to do something first? What's the best way to clear out all my prior jailbreak stuff before the next update? Thanks for the help!