How to Convert Kindle KFX to EPUB/PDF with Calibre

Hello,
I have followed the process above. However, when I am going to convert the file kindle, I received the message " cannot covert the ...." This book is locked by DRM...

What did I do wrong?

ps: I had downloaded the last versions of  DeDRM_tools and KFX Conversion Input Plugin.
I am going to enrol a Master and most of the books are in Kindle format.

Thank for your help.

Please help. When i tried to install DRM tools this message i got :

calibre, version 5.2.0
ERROR: Unhandled exception: <b>SyntaxError</b>:invalid syntax (calibre_plugins.dedrm.__init__, line 168)

calibre 5.2  embedded-python: True is64bit: True
macOS-10.15.7-x86_64-i386-64bit Darwin ('64bit', '')
('Darwin', '19.6.0', 'Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 2020; root:xnu-6153.141.2~1/RELEASE_X86_64')
Python 3.8.5
OSX: ('10.15.7', ('', '', ''), 'x86_64')
Interface language: None
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 34, 0) && Package KFX (from KFX Input) (1, 34, 0) && KFX metadata reader (from KFX Input) (1, 34, 0) && KFX Input (1, 34, 0) && Set KFX metadata (from KFX Output) (1, 44, 0) && KFX Output (1, 44, 0) && Obok DeDRM (6, 7, 0)
Traceback (most recent call last):
  File "calibre/gui2/preferences/plugins.py", line 317, in add_plugin
  File "calibre/customize/ui.py", line 472, in add_plugin
  File "calibre/customize/ui.py", line 61, in load_plugin
  File "calibre/customize/zipplugin.py", line 282, in load
  File "importlib/__init__.py", line 127, in import_module
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "calibre/customize/zipplugin.py", line 174, in exec_module
  File "calibre/customize/zipplugin.py", line 170, in get_code
  File "calibre_plugins.dedrm.__init__", line 168
    print u" v: Copying needed library files from plugin's zip".format(PLUGIN_NAME, PLUGIN_VERSION)
          ^
SyntaxError: invalid syntax

I downloaded the DeDRM Calibre Plugin and KFX Conversion Input Plugin, and installed them to Calibre. I'm running Calibre 3.30

I downloaded a Kindle Book (using Kindle 1.26.1), and located the .AZW file.

When added to Calibre, the book cover now appears, and the format is KFX-ZIP. When I try to convert to ePub, I get an error that the book contains DRM and cannot be converted.

What am I missing? Thanks!!

"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."

The link to the dedrm tool on this page references 7.21 from 2021 and does not include kfx, despite the blurb.

This applies to books from Kindle Unlimited

The DeDRM tools with added support for KFX format is NOT working in Calibre with new books from Kindle Unlimited. It will not strip the DRM.
Epubor Ultimate is also not working. When downgrading from version 1.35, you cannot save the book into your Kindle for PC anymore. Will there be upgrade or they already win? :-)

The link to the KFX plugin in your page did not work, it brings you to a page that says "invalid attachment"

I tried to download it somewhere else. And did download some KFX input plugin, but when I tried to import it into calibre there was no plugin at all that I could upload. I could not find any workable one. I am using Mac I don't know if it has something to do with it.

I would be happy for some help. Best regards

Tried updating my issue but the links in your email do not work but it did unsubscribe me from the list - thanks for that(!) {shame that was NOT what I wanted to do)

anyway, updated kfx-import as already had the up to date dedrm, works better but still have 87 books it won't convert (they are kfx.zip but so where the ones it did convert)- of course in those 87 are the ones I really want to convert as callibre won't open them to read either and kindle seems to have stopped their app opening unless you pay monthly for their unlimited (not gonna happen) and get the new version.

I downloaded and installed Kindle 2.8.0, ran KFXKeyExtractor28.exe using command prompt but could not generate the kindle_account.k4i and keyfile. I'm running Windows 11 24H2.

This is the error I got:

KFXKeyExtractor28.exe "C:\Users\UserID\Documents\MYKIND~1" keyfile kindle_account.k4i
Scanning C:\Users\UserID\Documents\MYKIND~1 for book folders
Kindle4PC appears to be installed globally, this is not tested and the utility might not work
adding search dir C:\Program Files (x86)\Amazon\Kindle\
Kindle Directory: C:\Program Files (x86)\Amazon\Kindle\Kindle.exe
Found sought after function
Got offset: 2c70000

Please help

Hi,
when I try to exec KFXArchiver291.exe I get these messages... Consider I've created output_folder, and I've tried .\KFXArchiver291.exe "C:\Users\UserID\Documents\My Kindle Content" output_folder output.k4i as well...

C:\Users\Agomar\Downloads\DeDRM_tools (1)> .\KFXArchiver291.exe "C:\Users\UserID\Documents\MYKIND~1" output_folder output.k4i
Scanning C:\Users\UserID\Documents\MYKIND~1 for book folders
adding search dir C:\Users\Agomar\AppData\Local\Amazon\Kindle\application
Kindle Directory: C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\Kindle.exe
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\Qt5WebSockets.dll to address 72900000
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\libEGL.dll to address 728d0000
Library already loaded
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\libGLESv2.dll to address 726d0000
Library already loaded
Loaded dll from path C:\Windows\System32\WS2_32.dll to address 762b0000
Loaded dll from path C:\Windows\SYSTEM32\WININET.dll to address 74fe0000
Loaded dll from path C:\Windows\System32\SETUPAPI.dll to address 76ca0000
Loaded dll from path C:\Windows\SYSTEM32\tbs.dll to address 72940000
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\Qt5WebChannel.dll to address 726b0000
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\Qt5WinExtras.dll to address 72620000
Library already loaded
Loaded dll from path C:\Windows\System32\USER32.dll to address 76100000
Library already loaded
Loaded dll from path C:\Windows\System32\SHELL32.dll to address 75a50000
Library already loaded
Loaded dll from path C:\Windows\System32\ole32.dll to address 767f0000
Library already loaded
Loaded dll from path C:\Windows\System32\OLEAUT32.dll to address 776a0000
Library already loaded
Loaded dll from path C:\Windows\System32\GDI32.dll to address 77670000
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\icuuc65.dll to address 71390000
Loaded dll from path C:\Windows\SYSTEM32\OLEACC.dll to address 740c0000
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\libfsdk_win32.dll to address 70aa0000
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\icuin65.dll to address 70810000
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\Qt5Sql.dll to address 725d0000
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\Qt5Xml.dll to address 725a0000
Library already loaded
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\Qt5Network.dll to address 71bb0000
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\Qt5Widgets.dll to address 703b0000
Library already loaded
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\Qt5Gui.dll to address 6fe80000
Library already loaded
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\Qt5Core.dll to address 716c0000
Library already loaded
Loaded dll from path C:\Windows\System32\ADVAPI32.dll to address 76660000
Library already loaded
Loaded dll from path C:\Windows\System32\CRYPT32.dll to address 76950000
Library already loaded
Loaded dll from path C:\Windows\System32\bcrypt.dll to address 77740000
Library already loaded
Loaded dll from path C:\Windows\System32\KERNEL32.DLL to address 77320000
Library already loaded
Loaded dll from path C:\Windows\SYSTEM32\MSVCP140.dll to address 6ce80000
Library already loaded
Loaded dll from path C:\Windows\SYSTEM32\VERSION.dll to address 75470000
Loaded dll from path C:\Windows\System32\WINTRUST.dll to address 774f0000
Library already loaded
Loaded dll from path C:\Windows\SYSTEM32\VCRUNTIME140.dll to address 6bd70000
Found sought after function by name
Found sought after function
Found sought after function by name
Library already loaded
Loaded dll from path C:\Windows\System32\ucrtbase.dll to address 77550000
Library already loaded
Loaded dll from path C:\Windows\System32\ucrtbase.dll to address 77550000
Found sought after function
Found sought after function
Library already loaded
Loaded dll from path C:\Windows\System32\ucrtbase.dll to address 77550000
Library already loaded
Loaded dll from path C:\Windows\System32\ucrtbase.dll to address 77550000
Library already loaded
Loaded dll from path C:\Windows\System32\ucrtbase.dll to address 77550000
Library already loaded
Loaded dll from path C:\Windows\System32\ucrtbase.dll to address 77550000
Library already loaded
Loaded dll from path C:\Windows\System32\ucrtbase.dll to address 77550000
Library already loaded
Loaded dll from path C:\Windows\System32\ucrtbase.dll to address 77550000
Library already loaded
Loaded dll from path C:\Windows\System32\ucrtbase.dll to address 77550000
Library already loaded
Loaded dll from path C:\Windows\System32\ucrtbase.dll to address 77550000
Library already loaded
Loaded dll from path C:\Windows\System32\ucrtbase.dll to address 77550000
Library already loaded
Loaded dll from path C:\Windows\System32\ucrtbase.dll to address 77550000
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\Qt5MultimediaWidgets.dll to address 72580000
Library already loaded
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\Qt5Multimedia.dll to address 6faa0000
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\WebCoreViewer.dll to address 72540000
Loaded dll from path C:\Users\Agomar\AppData\Local\Amazon\Kindle\application\libpngKRF.dll to address 724e0000
Lucene: 0 entry: 5842b9c
Found Kindle executable of version Kindle 2.9.1(71006)
Got offset: 3310000
Initialized exceptions
Flipped tls
Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
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Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
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Exception Address: 0x7789C95F
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Exception Address: 0x7789C95F
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Exception Address: 0x7789C95F
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Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
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Address: Exception Code: 0xC0000005
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Exception Address: 0x7789C95F
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Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
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Exception Address: 0x7789C95F
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Address: Exception Code: 0xC0000005
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Address: Exception Code: 0xC0000005
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Address: Exception Code: 0xC0000005
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Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
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Address: Exception Code: 0xC0000005
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Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address: Exception Code: 0xC0000005
Exception Address: 0x7789C95F
Address:
PS C:\Users\Agomar\Downloads\DeDRM_tools (1)>