...wont reboot even with sd card? I coppied all the files on my gps to my sd card then deleted all the files on my gps I thought it would reboot from sd card. Now the computer doesnt even see the device when I plug in the usb cable. I also tried the bootloader menu on the gps it comes up if I try anything it read "FAT failed" PLEASE HELP it my dads gps hes going to kill me.