Thread: New Kindle protection ?
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Old 09-14-2025, 12:02 PM   #2
Quoth
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Posts: 15,161
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Join Date: Jun 2017
Location: Ireland
Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper
Version 4.1.4 is only Kindle gen4 & 5 excluding the PW1
The Kindle gen3 to gen5 inclusive, inc. PW1 never get KFX. They mostly get azw3/KF8.

If the ebook is really old it may be mobi/KF7 and can named .mobi or .azw on the Kindle (without the 3). Whichever it is, copy to PC and rename to the other option and it will add to Calibre OK. Ironically this sometimes happens with DRM free titles.

Edit
See https://www.amazon.com/gp/help/custo...MQC26VQQMM8XSW
Last edited by Quoth; 09-14-2025 at 12:06 PM.
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