Thread: 3790 in endless boot loop

You don't need cure firmware., you just need original US gupdate.gcd saved to .RGN file by RGN_Tool to flash your US 3790 back to use original firmware.
Hard reset won't help.

You need
1). updater.exe
Download link ::

Code:

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2). RGN_Tool ( [Only registered and activated users can see links. ] )
3). .RGN file I said above.
4). Access to pre-boot mode for flashing nuvi back