Bold 9000 gps (AT&T-US) worked fine for a year with Google Maps. Installed and used "gps tracker" @ instamapper.com. Worked fine for a few days, then went "White Screen" while tracking. After Battery re-boot, firmware update, wipe-and-reinstall all programs, still no gps. Any thoughts? (I haven't yet tried the solution fromm an earlier thread about downloading Garmin.)