Quote:
Originally Posted by maddz
(If you purchase mostly from Amazon, you may wish to check the Calibre forum here about dealing with .kfx8 files which requires an older version of the Kindle app with automatic updating turned off.)
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One minor correction. The new problematic format is KFX (Kindle format 10), not KFX8.
The more easily converted KF8 (Kindle format 8) is often referred to by the file extension most commonly used for it, .azw3.