I have now tried:
- holding the powerbutton for a while. (1 min or so)
- clicking the reset button on the bottom with a pin.
- holding the reset button for a few seconds.
- holding the lightbutton, and pulling the powerbutton multiple times as described here:
https://www.kobo.com/help/en-US/arti...ura-hdkobo-glo
anything else i can try?