@arooni
I repeat: upgrading past 5.16.2 is NOT the end of the JB, it can be restored. HOWEVER, nothing works properly on these firmwares, because Amazon switched their compiling backend mechanism (from softfloats to hardfloats), meaning that currently compiled code in KOReader and all packages won’t work with 99% chance. Unless developers are willing to widely support this new architecture (which I doubt), you can’t have everything at once.
You either have JB+KOReader OR notebooks updates.
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