This just worked for my Tomtom Rider 2. I am glad I found this as I was having to use a pin to reset the device every time it turned off to get the the GPS to work a second time after each time I turned it off.
ps. If you leave it to reboot again with the flashing sd card in, it gives the message that it is going to flash your firmware again but doesn't so you can use it pin to reset / power off and then remove the flashing sd card. Then pop back in your own sd card with maps and voila.
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