try the cmd attached and it's not showing .system

This is what i did:
1. click volume --> touch and hold upper righter corn --> change auto to mass storage
2. copy cmd script to root garmin
3. unplug then turn on and then hold to power off.
4. connect to pc and i saw nuvi, click on cmd and even try right click run as admin and refresh. Still hidden folder not show. I had to manual unhide like explained here, [Only registered and activated users can see links. ]

I'm using Windows 7 x64