I was able to make the cure work a few times and the Nuvi would mount as a USB disk. However, after updater.exe to put back the original firmware, I can no longer get the cure to work again. I have gone back and forth a few times.
With original firmware, my Nuvi reboots after loading maps with a white flash on the screen. Now, with the cure applied, I only see the Garmin logo and the Nuvi powers off immediately. I cannot mount as USB to further troubleshoot / remove bad files preventing a normal boot.
Does the cure only work a few times? Is it possible I have something broken that prevents the cure from working?