Hello, I managed to find a PW2 (9017) with FW 5.4.3.2.
I came from
https://wiki.mobileread.com/wiki/5_x_Jailbreak
So I did a reset and I launched this jailbreak (it took me some time to realize that it was the content of a zip inside the tar.xz that I had to unzip). So I get the ***jailbreak***.
After that getting mrpi or KUAL fail. For mrpi, when I type ;log mrpi, there is nothing. For KUAL, I have the icon but when I launch I have "The selected application could not be started. Please try again". I rebooted for MKK to be active, but still the same.
So I restarted the whole process, I even downgraded the firmware, even if it's the same FW version, it successfully wrote the initial firmware.
I lauched the jailbreak, got the ***jailbreak***. Then again, mrpi or kual fail. That mean that I can't launch the dummy test too.