I recently got a 3G 8gig iPhone that has been either unlocked or jailbroken (not sure which). I am currently using it on AT&T and not paying the data plan. It has Cydia and Installer on it and the guy put a piggyback SIM on my SIMl. Does this mean mine is jailbroken or unlocked or both? Also, is there a way to update the firmware to 2.2 without messing anything up (i have 2.0.2 right now btw)?