You need to install Kual+ extension from MiLuJe’s Snapshots thread.
However, this method most probably doesn’t work for a long time anyway.
You definitely need BinaryRenamer in it dedicated thread:
https://www.mobileread.com/forums/sh...d.php?t=357438.
Again, READ everything to understand what it does and how to use it.
(Also, guys, if you just skim the last 5-7 pages - you will find exact same questions and exact same answers. JB and stuff is hard by itself so it demands some level of dedication a priori. )