Thread: Issues with Calbre dedrm 7.21 and newer kindle books
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Old 07-14-2021, 05:01 PM   #6
jhowell
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Location: Charlottesville, VA
Device: Kindles
Quote:
Originally Posted by titoCA321 View Post
I thought the KFX format was out for a while before the DeDrm migration to 7.2.1?
Amazon aggressively protects content delivered in KFX format.

There are a dozens of KFX DRM schemes already implemented in Kindle apps and devices. Each time the current DRM in use is reverse engineered and added to the DeDRM tools Amazon immediately switches to using a different one.

An attempt was made in the latest DeDRM release to support all of the KFX DRM schemes, including those unused so far, but it was unsuccessful.
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