Hi all

My nuvi 1350 is stuck at the Garmin screen and is multiple computers can't detect the device either as a drive on the computer or through web updater. Someone had accidently disconnected the usb cable from the device when I was updating it, so it looks like I have bad maps inside it. I also tried other usb cables.

I read a few threads on this forum and it looks like I am supposed to turn off the device, press the upper left corner for a while and then turn it on and keep holding the upper left until something happens. I tried this but still couldn't get into preboot mode so I can flash the device. Any advice? Am I doing the right thing?

Thanks!