<...> Did you put the nuvi properly into pre-boot? It's a little different to others. Firstly have updater.exe open on your desktop with the *.rgn file already loaded and a dot in the 'USB Device' radio button. With unit OFF hold the upper RIGHT corner of screen, slide power button to left then quickly to the right to lock and as soon as the Garmin logo appears immediately plug in the mini-usb to the unit. When your unit's details appear in the USB Window of updater.exe, quickly press the 'OK' button.