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Old 03-21-2025, 09:35 AM   #823
jhowell
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Posts: 7,116
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Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
Quote:
Originally Posted by John F View Post
So they would need to stop delivering to all firmwares before the above version if they wanted to plug the DRM removal holes?

For example, my PW3 is on 5.16.2.1.1, which I believe is on the most current firmware for the PW3.
I very much doubt that Amazon will ever plug all of the DRM holes, but they can close most of them fairly easily.

After the apparent defeat of all of the KFX DRM algorithms by DeDRM 10.0.9 in mid 2023, Amazon fairly quickly introduced additional algorithms but only deployed them for a small selection of books that they only make available with unbroken DRM. I suspect that may be due to a contractual obligation that they have with certain publishers like Pearson.

Since then they have gradually been rolling out a new set of DRM algorithms and deploying them for all books on the various Kindle apps. Currently DRM removal only works on outdated Kindle app versions. Eventually those will be blocked from being able to download books.

New DRM for all books has not yet happened with e-ink Kindles. Something seems to have delayed the release of new Kindle firmware recently. I suspect that Amazon is taking additional time to improve the security of the platform. When the next firmware finally comes out it will likely include new DRM for all books along with mitigation for WinterBreak and other potential jailbreaks.

After that only older Kindles will provide a means of DRM removal. Amazon may leave it at that or take further action.

We are now coming up on the ten year anniversary of the deployment of KFX format. Amazon could at any time stop making newly published books available in the older formats. That would provide incentive for owners of those devices to upgrade without preventing previously purchased books from being usable on them.

If that happens then Kindles new enough to support KFX but old enough to no longer receive firmware updates, like your PW3, may be the only workable solution left.
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