I used the current version of Calibre, installed the Apprentice Alf plugin and added KFX input plugin. For the Alf plugin I customized it and chose the first option for kindle readers and put in my kindle serial number. I downloaded the file from my orders section of amazon and it converted just fine. This was after trying multiple ways including using old version of software on my MacBook.
Over the years, Amazon has released many Kindle devices and many of them look similar in design. Sometimes it'll be difficult for us to answer the question \"which Kindle do I have\". Actually, Kindle Serial Number can help you identify the Kindle model or specific generation with the first four characters. Use this list and match it to the first four or six characters of your Kindle serial number;
When the packing box is missing, your Kindle won't turn on or the screen is broken, you cannot get the Kindle Serial Number through the above 2 methods. But you can still go to the Amazon website to find the serial number as long as you've registered your Kindle device with your Amazon account before.
Step 7: On most Kindles, you can find this by going to Settings > All Settings > Device Options > Device Info on your Kindle. You should see information about your Kindle, including the serial number.
On Calibre Kindle to PDF converter, click Preferences > Advanced > Plug-ins. Then double click File Type > DeDRM plug-in and select eInk Kindle ebooks. Enter the serial number of your Kindle on the converter.