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Old 03-20-2026, 08:36 PM   #46
Sirtel
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If Amazon want to close all the holes, they'll need to also do away with Kindle apps as that is also a security hole.
They do disable downloads of new books for older versions of apps pretty regularly. And Kindle for Mac is pretty much dead as far as deDRM goes anyway.
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Old 03-20-2026, 08:56 PM   #47
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Do you think Amazon will do something to screw with Kindle firmware that cannot handle KFX?
I agree with Sirtel that Amazon may eventually block older Kindles from downloading books. If so it would likely be done by making books published after a certain date only available in KFX format.
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Old 03-21-2026, 06:15 AM   #48
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I agree with Sirtel that Amazon may eventually block older Kindles from downloading books. If so it would likely be done by making books published after a certain date only available in KFX format.
I'm hoping this is incorrect,
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Old 03-21-2026, 08:59 AM   #49
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Do you think Amazon will do something to screw with Kindle firmware that cannot handle KFX?
Technically, yes? I think the DRM on KF8 is versioned, so they could make a new derivation method and "patch" the firmware to use that as fallback. Practically, unlikely since modifying KF8 is somewhat more involved than KFX, and it is mostly obsolete to them, but then again, what do I know? They consistently do something I did not expect.


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And Kindle for Mac is pretty much dead as far as deDRM goes anyway.
Oddly enough, it seems like Epubor did something by themselves for a change, and started to support K4Mac with SIP disabled. When SIP is off, process memory can be accessed and hence, either the key or book itself extracted. So it is feasible, but I do not know how true it is, obviously.
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Old 03-21-2026, 09:38 AM   #50
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Technically, yes? I think the DRM on KF8 is versioned, so they could make a new derivation method and "patch" the firmware to use that as fallback. Practically, unlikely since modifying KF8 is somewhat more involved than KFX, and it is mostly obsolete to them, but
Is the latest K4PC able to be used to have the DRM removed?
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Old 03-21-2026, 09:50 AM   #51
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Is the latest K4PC able to be used to have the DRM removed?
K4PC 2.8.3, yes. I am not aware of any later version. Downloads of certain Indian books still blocked, though.
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Old 03-21-2026, 09:54 AM   #52
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K4PC 2.8.3, yes. I am not aware of any later version. Downloads of certain Indian books still blocked, though.
I just had a look and there is this version of K4PC. KindleForPC-installer-2.8.70995.exe

Can DRM be removed using this version?
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Old 03-21-2026, 10:12 AM   #53
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I just had a look and there is this version of K4PC. KindleForPC-installer-2.8.70995.exe

Can DRM be removed using this version?
That would be 2.8.3. So, yes, but you need KFXArchiver from here. Used as described here. If you prefer key extractor, bump your version down to 2.8.0, the algos should be the same.
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Old 03-21-2026, 10:29 AM   #54
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That would be 2.8.3. So, yes, but you need KFXArchiver from here. Used as described here. If you prefer key extractor, bump your version down to 2.8.0, the algos should be the same.
Thanks!
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Old 03-21-2026, 11:01 AM   #55
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For the curious, this is the reddit post I have seen about K4Mac. I would not recommend disabling SIP if you don't know what it is for, and in general, would recommend Windows VM with free tools, but I can see the need for it here.
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Old 03-21-2026, 12:33 PM   #56
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For the curious, this is the reddit post I have seen about K4Mac. I would not recommend disabling SIP if you don't know what it is for, and in general, would recommend Windows VM with free tools, but I can see the need for it here.
And people complain buying from Kobo is too complicated for them. I literally went cold turkey on Big River when they stopped allowing downloads except through the latest version of K4Mac so purchase from Kobo now. Also, an Epubor subscription is too much for me. I might want to buy one or two books a year from Kindle only authors. So they've lost sales by not going wide.
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Old 03-21-2026, 01:42 PM   #57
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And people complain buying from Kobo is too complicated for them. I literally went cold turkey on Big River when they stopped allowing downloads except through the latest version of K4Mac so purchase from Kobo now. Also, an Epubor subscription is too much for me. I might want to buy one or two books a year from Kindle only authors. So they've lost sales by not going wide.
No matter how you remove the DRM from Kindle eBooks, it will never be easier then removing the DRM from Kobo eBooks.
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Old 03-21-2026, 01:48 PM   #58
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Removing the DRM on the Kobo purchase is, indeed, easy. But the web site is a mess and the reviews are useless.

In practice, I look for books on Amazon then go to Kobo to buy the book most of the time.
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Old 03-21-2026, 02:12 PM   #59
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No matter how you remove the DRM from Kindle eBooks, it will never be easier then removing the DRM from Kobo eBooks.
To me, they look pretty much the same. Although Kindles are a little tougher recently.
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Old Today, 04:27 PM   #60
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I agree with Sirtel that Amazon may eventually block older Kindles from downloading books. If so it would likely be done by making books published after a certain date only available in KFX format.
My K4BNT stopped being able to download books (all books!) today. Not sure if it's just me or if Amazon has pulled the plug. More details here: https://www.mobileread.com/forums/sh...35#post4575235
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