Quote:
Originally Posted by jhowell
You must have had the DRM removal plugin installed for that to work. Books delivered from Amazon in KFX format always have DRM. Conversion of KFX books with DRM was possible at one time in calibre, but it no longer works because Amazon keeps changing the DRM scheme in use.
If the publisher has requested that DRM not be used then Amazon uses a generic key for the DRM so it is not tied to a specific device or account. That means that it is generally possible to move a KFX book from one Kindle to another and have it work if the publisher requested DRM-free.
Interestingly, personal documents sent to a Kindle Scribe arrive in KFX format without DRM. That shows that Amazon is able to produce DRM-free KFX. They just have chosen not to do so, instead interpreting DRM-free as meaning you are free to move the book from one device to another as long as they are both Kindles.
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Nope--I didn't even run it through Calibre at all. I just copied the files from one Kindle to another. I just tested doing that again with a DRM free book that was published on January 3rd. I downloaded the book to my 2022 Kindle Basic and opened it there, then connected that Kindle to my computer and copied all of the files associated with that book to my computer (including the sdr folder). I then ejected that Kindle and connected my Paperwhite5 and copied all of the files for the book to that Kindle. When I eject the PW5 the book appeared as downloaded and I was able to open it with no problem.
Those are the exact steps that I took back in 2015 when the format was first introduced. Here's some links to the threads talking about it, that you participated in:
https://www.mobileread.com/forums/sh...86#post3150886
https://www.mobileread.com/forums/sh...32#post3150932
Shari