Thanks very much for your reply, and amazing work on your plugins - they've been very helpful. To give some context, this venture started because I bought a new Kindle Oasis. As per normal, I put some books into Calibre and the KFX plugin appeared to strip them of their DRM. I then altered the titles and covers of said books, and put them onto my Kindle. When I looked at my Kindle, however, the cover art and the titles are what they were before, as if the DRM remained, or the metadata I changed in Calibre didn't carry over. It is hard to speculate without more detail. How did you modify the book? Did you make sure that the original was not still on the device before copying the new one? Did you check both the cover thumbnail and the cover at the beginning of the book? I need to know what you did step by step.

You may need to remove the ASIN of the book in order to prevent the kindle from using the cover thumbnail (and possibly other information) from Amazon.

This will prevent it from syncing reading position, notes and highlights. Using the latest version of Kindle for Mac, I download a Kindle book. I find its AZW in Finder and drag and drop it into Calibre.Ģ.

Calibre azw drm removal