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Old 02-13-2025, 08:06 AM   #64
Quoth
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Posts: 14,575
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Join Date: Jun 2017
Location: Ireland
Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper
Quote:
Originally Posted by rantanplan View Post
Just wondering, would it be possible to block the delivery of KFX on a jailbroken device to always receive KF8? Like spoof the firmware version?
See https://www.amazon.com/gp/help/custo...MQC26VQQMM8XSW

Version 3.4.3 gives kf8 (azw3). Never KFX
Versions 5.6.x and later give KFX mostly.

If the ebook is ancient it might be mobi or azw (mobi with different encryption)

So that leaves
Kindle Touch (4th Generation) 5.3.7.3
Kindle (4th and 5th Generation) Latest version: 4.1.4

The original K3 and some others got azw3/KF8 by pack port on firmware. Originally mobi/azw. K3 upgrades to 3.4.3.

The K1, K2, DX and DXG apparently didn't have enough RAM to backport kf8/azw3, so don't do it.
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