Thread: Garmin devices preboot mode

I have read the instructions and my interpretation is that there is no point in doing anything else until I have succeeded to get the device into pre-boot state. I also assume that there will be some sort of message on the screen indicating pre-boot state. Once this works I would take the next step running the software as described.

I have tried to press and hold left upper corner of screen while connecting USB cable (already connected to PC). I have also tried to press and hold screen while pressing power button (which is actually what is specified for Nuvi 50 in the beginning of this thread).

When I accidently formatted by device I also removed the partition through Windows Administration Tools->Storage still thinking it was my SD card. Could this have caused more serious damage than just the formatting?