Go
HERE for information on unlocking and flashing. Olipro 1.20 is the non-gps bootloader. On a VX6800 (Titan), all three (ROM, radio, bootloader) must be compatible (non-gps or gps enabled). Maybe someone tried to flash a radio ROM and that is why the device will not boot into the OS.
I would think flashing the latest official ROM will get everything back in working order. Go
HERE for the latest Verizon ROM.
Maybe someone can chime in regarding the Verizon MR1 ROM/GPS lockout and info on upgrading. After your friend gets the device operating, he can try some of the custom ROMs and radios.