I just got my first Fire (HD8) in years and immediately used the toolbox to change some things. Now I'm stuck, though: I changed the lockscreen security type with the toolbox to pattern and now I would like to change it back to a PIN. When I start the "change lock screen security type", the Fire screen shows that I have to "confirm your current PIN" to continue. But I don't have a current PIN, as I have the pattern now.
Entering the previous PIN doesn't help, neither does converting the pattern into a pin according to
this. Does anyone know how I can revert back to a PIN?