So according to the jailbreak guide, there are some issues with the latest FW version and I happen to have it on my kindle paperwhite PW3.
Is it possible to downgrade it anyway?
A few months ago I tried to register a Japanese account on the device and since then the lock screen cover is stuck on a Japanese ad.
With jailbreaking I hope to change the cover and maybe add some features I don't know about yet
Thanks guys!