Thread: DRM workaround: Kindle for Android
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Old 03-13-2023, 09:01 AM   #243
jhowell
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Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
Quote:
Originally Posted by ownedbycats View Post
I'm still curious as to why Bluestacks continues works. Has anybody tried the exact same Android version as their hard device?

I thought of a slow rollout, but I feel like it's been long enough for Amazon to cut off everyone by now.
I suspect the delay is related to why the Android app does not download KFX format when updated to a newer version on BlueStacks.

Newer versions of the Kindle for Android app test the graphics capabilities of the device on which it is running (called a sniff test internally) and if the test fails KFX becomes unsupported on that device. The same mechanism is used in the Kindle for PC and Mac apps. I assume that Amazon discovered early on that there were so many devices incapable of supporting KFX that they made a fallback mode instead of just having the app fail to work on those devices.

I don't know what telemetry the app sends back to Amazon but I suspect it is enough to know that forcing an update to the app running on BlueStacks would be pointless since the user already has the DRM key from the older version and the upgraded version still won't use KFX with more secure DRM.

They are probably still working on a solution to that. Perhaps they will do away with the no-KFX fallback and will now have to face the customer support consequences of doing that.
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