I have a jailbroken 3GS and it's been running perfectly since I've had it. Today, I synced it to update some podcasts and add an app that I downloaded - all was fine. Then later I plugged the iPhone in and got the "Setup Your iPhone" screen saying "An iPhone has been previously synced with this computer." Yeah, no ****.. This exact iPhone! I have never synced any other devices with this computer or changed anything it just came up randomly and won't go away! Is there any way to fix this without restoring?