I was able to update to firmware 5.6.1.1 on my PW1 and the screensaver is automatically downloading from a docker container running this:
https://github.com/sibbl/hass-kindle-screensaver
Unfortunately, when I lock the screen, it cycles for 60 seconds every time. This kills my battery.
I know this is an old thread, but is there something in the config that someone can point to that I can change this setting?