I've reopened Calibre in debug mode so I hope this is the right file to include at the bottom. Am running Windows 10 on my laptop with Calibre 1.17 which I've reverted to with Windows de-drm plugin v 6.5.3 which has the default key for Kindle for Mac/PC's displayed. (Well, at least is says it has the default key) but I don't know it's working! While the developer is fixing the problem, try using an older version. If you need the previous version of Kindle for PC, check out the app's version history which includes all versions available to download. Download prior versions of Kindle for PC for Windows. All previous versions of Kindle for PC are virus-free and free to download at Uptodown. So, I want some very specific books from Amazon's Kindle Unlimited store. I am planning on getting the 30 days trial, downloading as many as I can, exporting the eBook files while the trial lasts, then canceling the subscription before they start charging me, around day 29. Amazon has new ebook format since Kindle for Pc 1.19, new format call KFX format cause problems, we need to downgrade kindle for pc to old v1.17 or v1.24, kindle for Mac to v1.17, download ebook file in old version.
A more in-depth discussion of the KFX format can be found in the KFX Format thread, the MobileRead Wiki (KFX), and the KDP help pages. KPF (Kindle Package Format) is a ZIP archive. The main components are a descriptive KCB file in JSON format and a KDF file containing the main book content in an SQLITE database.
A terrific good news for loyal Calibre users is last week Apprentice Alf released a new version of the DeDRM tools with added support for KFX format, so now you can easily import KFX books to Calibre to remove KFX DRM in order to create backups and convert them to other formats. So in this article I am going to show you how to remove DRM from KFX books and convert KFX to Mobi/Epub/PDF step by step.
How to Convert Kindle KFX to Epub/PDF/Mobi with Calibre
The DeDRM Calibre plugin is intended to help anyone looking for free software for removing DRM from their purchased Kindle KFX ebooks. But we have to admit that the biggest inconvenience about using Calibre to remove DRM is that you have to install De-DRM Plugin and KFX Conversion Input Plugin to Calibre fisrt. And this is also the most difficult and also indispensable part to use Calibre to convert DRMed KFX books to Epub/PDF/TXT...
Step 1download Calibre to your computer and launch it.
Step 2download DeDRM_tools and KFX Conversion Input Plugin to your computer.
Step 3load DeDRM Calibre Plugin and KFX Conversion Input Plugin to Calibre.
Open calibre's Preferences dialog. Click on the Plugins button. Next, click on the Load plugin from file button.
Navigate to the unzipped DeDRM_tools folder and, in the folder DeDRM_calibre_plugin, find the file DeDRM_plugin.zip. Click to select the file and select Open.
Click Yes in the 'Are you sure?' dialog box. Click the OK button in the 'Success' dialog box.
Then repeat the same operation to load the zipped KFX Input folder to Calibre.
The loaded DeDRM plugin will be displayed under File type plugins.
And the loaded KFX Conversion Input Plugin will be displayed under Conversion input plugins.
Step 4add Kindle KFX books to Calibre by clicking Add books in the tool bar.
You need to download KFX books with Kindle for PC/Mac or Kindle e-ink Reader first, then add KFX books from My Kindle Content folder or the Kindle's Document folder to Calibre manually. The book will be decrypted soon after you add it to Calibre library.
The KFX books downloaded with Kindle for PC/Mac will be saved in .azw format.
While the KFX books downloaded with Kindle device will be saved in .kfx format.
When you add KFX books to Calibre library, please make sure that your know exactly where your downloaded KFX books are stored on your computer.
If your KFX books are downloaded to your computer with Kindle for PC/Mac, you need to add KFX books to Calibre library from My Kindle Document folder.
If your KFX books are downloaded with Kindle e-ink Reader, then you need to add KFX books to Calibre library from Kindle’s Document folder.
Step 5Convert KFX to Epub/Mobi/PDF
Click Convert books in the tool bar and choose ePub/Mobi/PDF/AZW3/TXT... as the output format and click OK to start the conversion.
The book will have two formats for you to choose from after the conversion.
Note: Though Calibre can remove DRM from KFX books , it still can't open decrypted KFX books.
How to Convert Kindle KFX to Epub/PDF/Mobi without Installing Plugins
Epubor Ultimate is the first software to declare that it can remove DRM from KFX books not long after Amazon adopts the latest the KFX format. Epubor Ultimate equals an eBook DRM Removal and eBook Converter, which makes it super easy and convenient to decrypt and convert a bunch of books to ePub, PDF or Mobi with just 2 clicks.
Step 1download Epubor Ultimate to your computer and launch it.
Step 2download your KFX books to your computer with old version Kindle for PC/Mac(below 1.25 version).
Step 3add the KFX books from the left to the right main window to remove DRM.
Note: One cool thing about Epubor Ultimate is that it can automatically detect your downloaded KFX books in the left sidebar under Kindle column.
Step 4choose PDF/ePub/Mobi/TXT/AZW3 as the output format and click Convert to PDF/ePub/Mobi/TXT/AZW3 to start the conversion.
If you have used Epubor software before, you should know what Epubor software is capable of. If you haven't used Epubor software before, now you can use the trial version to try it out by yourself.
Besides converting DRMed KFX books to Mobi/ePub/PDF using the above methods, you can also convert Adobe DRMed books and other Kindle DRMed books to ePub/Mobi/PDF... using the two powerful tools.
Calibre VS. Epubor Ultimate
Calibre is an open source freeware ebook library manager. It is the best tool around for keeping track of your ebooks. The DeDRM plugin for Calibre provides a free way to remove DRM from your Kindle and Adobe DRM ebooks. Though Epubor Ultimate is a paid software, it has absolute advantage over Calibre. First of all, you don't have to download the DeDRM plugins and the KFX Conversion Input Plugin. This could be a pain in the ass if you are a tech newbie. Second, Epubor Ultimate supports removing DRM from KFX books downloaded from Kindle e-Ink Reader. Third, Epubor Ultimate can automatically detect all of your downloaded Kindle books, so you don't need to add your downloaded KFX books to the software manually.
In a word, Calibre is not as easy as Epubor Ultimate, it's a little difficult to handle for some people who is not skillful. Epubor Ultimate can definitely save you a lot of trouble by converting DRMed books to Mobi/ePub/PDF... So it totally worths your money. And if you are not satisfied with Epubor software, you can get your money back within 30 days after you place the order.
Important Notice
Both calibre and Epubor Ultimate can’t remove KFX DRM if the Kindle books are downloaded from v1.25 or above Kindle desktop app. So we suggest you downgrade your Kindle app to an older version instead in order to decrypt Kindle books smoothly. And if you are using the latest macOS 10.15 Catalina, and have a Kindle e ink device, you can follow this guide to convert Kindle books.
Conclusion
Comparing Calibre with Epubor Ultimate, to be honest, both tools have their own advantages. But Epubor Ultimate makes it more efficient and convenient to remove DRM from KFX books and convert KFX to Mobo/Epub/PDF... If you have little knowledge about computer, we strongly suggest you use Epubor Ultimate to solve your problem directly with simply 2 clicks.
Hillary Lopez works for Epubor and writes articles about eBooks and eReaders. She explores the best method to help you read eBooks more freely and wants to share all she has got with you.
Why downgrade kindle for pc/mac to older version? As amazon has released its new Kindle for PC/MAC version 1.25, its DRM scheme is much tougher than ever before. Kindle books downloaded via Kindle for PC/MAC 1.25 (or higher version) will be encrypted with the new kindle kfx DRM, namely Kindle KFX 2. Currently there is not any software around the world can remove DRM from Kindle books downloaded via Kindle for PC/MAC 1.25 or even higher version. As every software is not perfect, we believe that we can find the direct way to crack kindle new kfx DRM sooner or later. For readers who are reading this article, we have provided the temporary solution to bypass the kindle kfx 2 which is downgrading kindle for PC/Mac to older version. In this way, you can get the older kindle kfx books and find many tools on the market to decrypt these kindle books and convert them to any format as you like.
Method 1. Manually Downgrade Kindle for PC/Mac
Method 2. Automatically Downgrade Kindle for PC/Mac
Method 2. Automatically Downgrade Kindle for PC/Mac
Notice: If you are on Mac Catalina 10.15, downgrading kindle to 1.23 or older will not work any more, but you still can remove Kindle DRM on Mac Catalina if you have any kindle e-ink device.
Method 1. Manually Downgrade Kindle for PC/MAC
Since the new kindle kfx DRM has been employed to kindle books from Kindle desktop version 1.25, we only need to downgrade Kindle App to version 1.24 or earlier. The latest kindle version before 1.25 for Kindle for PC is 1.24 while kindle for Mac is 1.23. In this part, I will walk you through how to downgrade Kindle for PC/Mac to older version manually.
Manually downgrade kindle for PC from 1.25 to 1.24.
1Run Kindle for PC. Go to the top menu bar, select “Tools”-->> “Options”.
2The option window will pop up. Select “Registration” at the left side and click on “Deregister”.
3In the popped up window, tick “ I understand….be removed from this device” and then click on “Deregister”.
4Uninstall Kindle for PC 1.25 and download Kindle for PC version 1.24.
5Install Kindle for PC 1.24 and then uncheck the Kindle automatically update option by clicking on 'Tools'-->>'Options'-->>'General'-->> uncheck “Automatically install updates when they are available without asking me.'
If the 'Software Update Available' notification pops up, please click on 'Skip this version' button. Then redownload the kindle books again via old kindle for PC/Mac.
The steps for downgrading Kindle for Mac is almost the same as downgrading Kindle for PC, but the older version for Kindle for Mac is 1.23. Referring detailed steps, please check how to downgrade Kindle for Mac to version 1.23.
Method 2. Automatically Downgrade Kindle for PC/Mac
If the above steps are a little bit complex for you, Epubor Ultimate can help you downgrade your Kindle for PC/Mac to older version automatically. What’s more, it can remove Kindle KFX DRM as well. Below are detailed steps.
1Download and install Epubor Ultimate.
2Run Epubor Ultimate. Click the menu button at the top left corner to display the book library of this software.
3Click on “Kindle” tab, if you are using the Kindle for PC/MAC version higher than 1.24, there will be a notification to remind you to downgrade your Kindle version, see below picture.
Click the notification to open the window of downgrading the Kindle for PC and click on “Start” button to start the automatic downgrading process.
Once finished, the old version of kindle for PC(version1.24) will be installed successfully and restart automatically on your computer.
Also, click on “Yes” to accept the Kindle Terms of Use in the popped up window. The Kindle for PC version 1.24 has been successfully installed.
Just a few clicks, you can downgrade your Kindle for PC to older version. If you are using Mac, the steps are the same as on Windows, but the Kindle for Mac will be downgraded to version 1.23.
Note: If your MacOS has been updated to the MacOS10.15 Catalina, kindle for Mac 1.23 will no long work on your computer any more because it is the 32 bits application while the new MacOS 10.15 only supports 64 bits applications. But if you have a kindle e-ink device, here is the complete guide on How to Remove Kindle DRM on MacOS 10.15 Catalina.
Bonus tips--Remove kindle drm and convert kindle to any format
When the old version of Kindle desktop version has installed successfully, you can just register it and re-download your Kindle books.
Run Epubor Ultimate, then drag the Kindle books from the left bar to the right main interface, and all Kindle books will be decrypted successfully.
For converting kindle books, please choose the output format from central bottom button and click on “Convert to XX”.
Once finished, “succeeded” will appear at the end of each book title. Just click on the “Succeeded” or click on the “Output folder” at the bottom right to locate the converted files.
Since you have liberated your Kindle books, just enjoy it at any devices as you like.
Conclusion
These are two methods I want to share with you today for downgrading Kindle for PC/Mac. Compared with manually downgrading, automatic downgrading is much easier, especially for people who are not so good at computer operation. No matter which way you are using to downgrade Kindle application, the final goal you want to achieve is to remove Kindle DRM. Taking this into consideration, downgrading Kindle for PC/Mac automatically is your perfect choice because Epubor Ultimate cannot only help you downgrade Kindle application, but also remove Kindle DRM smoothly and easily. Why not give it a chance to help you now?
Iris Yan joined Epubor since 2017. She always wants to share everything related to ebook reading and improve your reading journey.