Patch Kindle for Mac on Mac Catalina (Or Big Sur)

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Have you upgraded your kindle for Mac to 1.26 or even later version? If you did, you'll get kindle kcr format, not the old Kindle format. Is there any method to download the older kindle format with Kindle for Mac 1.26 or later version? Sure, you can download older kindle format with kindle 1.26 and even remove kindle drm, but you need to patch the Kindle for Mac. Want to know how, keep reading.

Things will be much easier if you are still using the Mac 10.14 or older system. You just need to downgrade kindle for mac to old version. Then you can download kindle books in old kindle format.

But if you are on Mac Catalina, please follow the following steps to get your kindle books decrypted.

This method is published by odamizu and initially posted on MobileRead Forum.

Step 1. Remove downloaded kindle books from computer at first.

remove kindle books from computer

Step 2. Close Kindle for Mac and open the terminal window and input following code:

chmod -x /Applications/Kindle.app/Contents/MacOS/renderer-test

Some users will fail to remove Kindle DRM even if they have execute this command. That’s because some of you don’t have the root privilege to stop the render-test program. To ensure you can 100% to remove Kindle DRM successfully, please add Sudo before the above command.

sudo chmod -x /Applications/Kindle.app/Contents/MacOS/renderer-test

When you put the above code in the Terminal and then click on “Enter”, you will be requested to fill in your computer passwords. Just fill in it and click on “Enter” again. All done.

stop render-test

Step 3. Re-download Kindle books.

Note: Please right click on the book title and then select “Download” from the drop-down menu. Or download from the menu bar “File-->Download”.

download kindle books

If you double click the book title to download the kindle book, you will get the Kindle KCR format with the latest DRM scheme which cannot be stripped for now. So please ensure your books are downloaded correctly. Also, please don’t open or read your downloaded books before removing kindle DRM. Otherwise, the Kindle files will be changed from .azw to .kcr which cannot be cracked for now.

download kindle kcr books

Step 4. Remove Kindle DRM on Mac with Epubor Ultimate---the best ebook DRM Removal and converter.


When you run Epubor Ultimate, it will detect the kindle books and display them on the left column under Kindle tab. Just drag the books to the right column, Kindle DRM will be remove successfully.

remove kindle drm

If you have kindle eink device, you can follow the Ultimate guide to remove Kindle drm on Mac Catalina or watch the below video to remove kindle drm.

If you still have not updated your MacOS system to 10.15 Catalina, please read How to Remove DRM from Kindle Books .


joined Epubor since 2017. She always wants to share everything related to ebook reading and improve your reading journey.

08/21/2020 18:25:29
Excuse me, but the link - use KCR Converter to convert Kindle cloud reader to epub/azw3/mobi - doesn't work, you can fix it? Thanks
08/23/2020 07:33:51
Thank you for asking. The kindle cloud reader doesn't support the offline reading. Therefore, your kindle cloud reader cannot be downloaded via kindle cloud reader.
It is out of our control. If you can download kindle cloud reader, then epubor kcr converter can still handle them.
Anyway, we are sincerely sorry for this issue.Also, we offer  the some workaround. Please contact support@epubor.com to get further assistance.
08/24/2020 23:05:32
Hello, this is the second message I placed, the first one was not published and I did not understand why. I ask you if you can fix the link at the top - use KCR Converter to convert Kindle cloud reader to epub/azw3/mobi - because it doesn't work and I don't know how to proceed since my Mac system already updated to Catalina but I never use Epubor Ultimate before. Thanks
08/25/2020 09:14:00
Thank you for using our software. The KCR CONVERTER only handles the kindle cloud reader books. But now there kindle cloud reader books cannot be downloaded any more. This is decided by Amazon. So no, kcr converter doesn't work any more.
We are sincerely sorry for the inconvenience caused.
09/10/2020 06:59:22
Can we get a $15 discount on the lifetime purchase of Ultimate since KCR no longer works.
09/10/2020 10:09:15
Thank you for contacting us about this issue. Sure, we will help you get this issue fixed via email.
01/11/2021 02:55:32
I have Big Sur and while it did take me a while to navigate through all the help files and decipher the best way to pull off converting these files it did end up working. Using the sudo command in terminal and then downloading again made it possible. Thank you. I appreciate the hard work you guys put into this as I know it is hard to write support for so many different variables. A+ to you and your team.
01/11/2021 09:53:57
Thank you for your comments. We've also received the tickets you created.
We've tested your license and ensure it can register well at our side.
Please try to register it again. If you are still failed, please let us know. We'll help you check this issue via Teamviewer.
We are sincerely sorry for the inconvenience caused.
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