Thread: Transform a Nuvi 37xx in a Nuvi 34xx for dummies

@Catymag, how to get into NonVol from volume page?

Thanks for advice.

I flashed my 3790LMT US model last night to the 34xx firmware. I'm trying to restore my 3790 back as it was before flashing to the firmware for the 34xx. I made a complete backup of my 37xx and all the folders. When I boot my nuvi up I don't see the black screen where the Garmin logo is where I hold the power button down to get to the preboot and press on the G in garmin. I can't get the updater to work now to flash back my firmware. The updater never shows the nuvi under usb device . I've changed the the settings under MTP several times and tried all of them and still the updater never sees my nuvi. I,ve Cleared the NonVol each time and still doesn't show up. Any suggestions?