(I m on 5.8.7 (>=5.5) so reading the tutorial, I assume MrPi is needed for .bin packages right ?)
Thanks to both of you I installed everything and everything works.
I installed KUAL first (by putting the KUAL-...-2.0.azw2 file in /documents)
And then i unarchived the kual-mrinstaller-1.6.N.zip at the root of my Kindle.
I was able to launch KUAL, then launch Helper tool, and click "Install MR Packages" and the message "Hush Baby..." appeared followed by "no MR packages found" (everything normal).
Actually, I was bugging on the 8.a instruction :
Putting
;log mrpi in the search bar and validating it wasn't, isn't, doing anything. (no "Hush baby" -> "no MR packages found" message appearing)
(I tried it with both unarchiving mrpi archive in Kindle's root case, or just putting the archive at the Kindle's root case. As neither of the cases worked, I was unsure about understanding the instructions anymore)
But launching it through KUAL works.
Thanks again
PS: I m french, (not so far from english) but I just lack of english grammar bases and verbs time matching, so I often end up twisting the meaning of a sentence