Ok, I worked with kunix quite a bit today and it was suggested the device is not erasing flash regions at all and that I post back here for any further suggestions because the unit is still suffering from the garmin boot loop.

The last step I ran was running a updater with the files from sdcard1: [Only registered and activated users can see links. ]

The output from to my sdcard was this:

nüvi 13xx Series Software Version 6.10, UID: %SameUID/HWID%, HWID: %SameUID/HWID%
------------------------------------------------------------------------------
Parsing "ergn,14"
Error
Parsing "ergn,41"
Error
Parsing "invalid_line"
Error: invalid command 'invalid_line'
Error
Parsing "reboot"

So my question is, does anyone else have an suggestions on this? Or is it possible to open the Nuvi 1390 up and replace the flash memory or maybe have it work from the micro SD card with some type of boot loader? I'm just throwing anything out at this point because it's not looking good for this 1390 which wasn't dropped. They only bad thing this unit possibly received was exposure to the summer heat from within the car, but I would think most people have left their Nuvi in the car during the heat of summer before. kunix, thanks again for all the time you spent with me today.