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Hello to all.
Sorry for jumping into this and adding my two cents without being in the least technically proficient, but all I know is that after having done quite a lot of research on how to handle these issues, I've been using both KFX Input (version 1.31.0) and DeDRM (version 6.8.0) with Calibre (version 4.23) and have never had any problem for over a year : apparently the KFX Input extension strips any incoming ebook of its KFX characteristics the second it is added to Calibre and turns it into a "plain" AZW3 that is then easily stripped of any DRM and converted to Mobi or EPub or such.
One useful precision : I download e-books not on any Kindle device, but on "Kindle for PC" (version 1.19, no later version will work ; and by all means block any automatic update of Kindle for PC !) ; only then do I transfer what I want to a Kindle.
Then again :
1/ since, as I said, I am not technically proficient, it may just be that, by sheer chance, none of the books I downloaded were actually in KFX, and thus what I think is the action the KFX Input extension is not ; but considering the number of e-books I deal with (around 25.000) it seems statistically rather unlikely ;
2/ it is, as far as I know, still impossible to use DeDRM with any version of Calibre numbered 5 or above (no big issue as long as version 4.23.0 works fine).
The only books that will not be converted at all are the ones in the weird (and rare) AZW4 format (chiefly textbooks and quite a bit like PDF-lookalikes, apparently).
Last edited by Jacques Q.; 01-11-2022 at 03:18 PM.
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