I tried this procedure:
https://kindlemodding.org/jailbreaking/WinterBreak/
with my Kindle Paperwhite (11th Generation) [Serial G001 PX11; FW 5.14.0.
Everything went fine, I have a "Run Hoftix" on my kindle, but when I tried to start KUAL with ";log mrpi", it says on the bottom "Hush hush..", then for a short moment a 'box' logo appears, but closes immediatly. I cannot find any KUAL book in my libary.
I guess after connection there was an update as I am now on FW 5.14.3.2
I ran the Hotfix serveral times, and repeated the post jailbreak process several times (
https://kindlemodding.org/jailbreaking/post-jailbreak/)
Don't now where to go from here...