Daily Shaarli

• Download the Kindle PC app here
• You can downgrade it to the correct version using the iSummerSoft Software
• Uncheck the upgrade automatically checkbox
• Download the book via the app
• Install DeDRM in Calibre
• Get the awz file of the books in "My Documents\My Kindle Content"
• Load it in Calibre

Sources :

• https://ebookfriendly.com/back-up-kindle-books-2-ways/
• https://www.isummersoft.com/how-to-dedrm-with-calibre/