I did a very bad thing about a week ago. I was charging my Garmin 650T while working on my computer and accidentally wrote to the internal drive. I realized and stopped it after a second or so but the damage had been done. It kind of still works but all the maps are gone and I cannot connect over USB. After looking into this it seems my only option is sending it back to Garmin for 0 plus shipping. I am surprised there is no way for me to re program it via Jtag or something. Maybe I need to pull it apart and look at the processor and memory it uses and learn more. I am defiantly not sending them 0 Any advise appreciated.