Ok, that message means the device exited preboot before the flash was initialized. Once the flash starts the device will hold preboot and you must be very fast to start the flash by hitting 'OK' button on Updater's GUI immediately the device details appear in the window next to 'USB Device'. Follow this:

  • Because you'll need to plug the USB cable into the nuvi with it fully OFF (not in standby) you may have to hold the power button down for up to 30 seconds to force it off if necessary.
  • Load the cure firmware to Updater.exe before connecting the nuvi.
  • Have your mouse cursor positioned over the GUI's 'OK' button.
  • Plug the USB cable into a rear port of PC (NO hub) and then firmly hold the top LH corner of the screen before you plug the usb cable into it.
  • Plug the miniUSB into the socket of the nuvi which will power it on.
  • Instantly the device shows in Updater hit 'OK' or press the enter key of your keyboard.
  • Keep firm steady pressure on the screen until the flash finishes or at least until 'Software loading' appears on the screen.