There’s some additional discussion in another of Apprentice Alf’s GitHub threads. There’s some discussion of what looks like a similar problem in this GitHub thread - ElleKayEm’s post might be helpful. I have an e-ink Kindle, though, so I was able to use the serial number from that.Īre you using an e-ink Kindle serial number in the plugin? If so, is there any possibility that it’s from a Kindle that’s too old to handle the current file format? I didn’t run into any issues, and I’m running Catalina. I then converted them to EPUB format to confirm that the DRM was removed. I downloaded the files for USB transfer and imported them. Given some of the comments in these MacUpdate comments - particularly the ones from 2019, wariness is probably in order.)Īnyway, for the info: your post sent me to try to remove DRM from the books I most recently purchased. (When I was trying to get Apprentice Alf’s tools working I also came across Epubor in my searching - and I was a bit wary, too. This isn’t really a direct answer to your question, but a bit of info just in case it’s helpful. I found references to some tools from a company called Epubor but not to sure about them and want some info from other users first. Updated the de-drm plugins in Calibre to the latest versions but they still won’t remove the DRM. I tried the suggested new replacements: Download from the web to an old kindle device using the feature to transfer by USB to get an older. Old revs of kindle app don’t work on Catalina and the new file formats are all DRMed even from publishers who have said no to that outdated technology. Not to steal or hurt any authors but because I want a free and usable copy of the books I buy. Procedure was to download books in old kindle app, I had a Hazel job watching the kindle folder and copying the various book format files into a convert folder and a Calibre process to automatically run the items in the convert folder through de-DRM and bring them into my Calibre library. My old method was to use Apprentice Alf’s DRM removal tools running under the older rev of Kindle app.

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