5.12.2.1.1 is the lastest Firmeware version of the Kindle Paperwhite 2.
I precisely have the PW2, PW2IL (
serial 9017).
To jailbreak a PW2 you first need to downgrade it. When trying to downgrade the Firmeware using
this method, the downloaded Firmware (update_PW2_5.4.3.2_initial.bin) is deleted by the Kindle as soon as the USB device is ejected.
I was hoping to jailbreak my Kindle so I could install
Koreader.
I looked at a lot of posts and wikis and I could not find a clear information about the state of the yet non-jailbreak and up to date PW2. I figured there is no known way to jailbreak those old models.
I am posting here so I can get any additional info I would have missed and so people looking for the information can refer to this post in the future.