Okay so I have a LG Thrill 4G running 2.2 . Its pretty scary its that old . But i have it on airvoice wireless a prepaid service . You have to flash the phone to connect to the service. Because i flashed it i cant get ota updates from AT&T . I recently found out it got ics update & i want to sideload it with my PC . But my question is will updating my phone mess up the service i have it set up to ? I cant really afford to mess it up cause i paid about $100 just to flash it & first bill . I really need help .