At TRMNL we have published a guide on how to jailbreak your Kindle[1], we also have a lot of community driven recipe[2] which are comics[3]
Disclosure: I work at TRMNL
[1]- https://usetrmnl.com/guides/turn-your-amazon-kindle-into-a-t...
That’s really fun use of TRMNL. I have the official device partially because I failed to find a jailbreak eligible Kindle in late 2024 :)