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tomsem · 07-30-2022, 05:32 PM

PocketBook has been updating various models to add AZW3 (KF8) support. I just got a PB Era a week ago and I thought it lacked this feature because I was getting a 'corrupt or copy protected' error when opening them. These were just the AZW3 files downloaded from Amazon Content page, imported into calibre with DeDRM plugin. I thought they'd be good to go, but evidently, there is something 'wrong' as far as PB is concerned.

However then I created a 'fresh' AZW3 from an ePub, and it opened just fine.

And then I took the AZW3 that failed, did a AZW3 to AZW3 conversion, and that opened just fine.

I'm not sure at this point if there is any reason to prefer AZW3 over an ePub file created from one (the AZW3 converted from AZW3 looked ugly compared to the ePub conversion).

But I'm wondering what gets tweaked during the conversion to AZW3, and which of these tweaks is required for PB to accept it as 'good' without a 'full' conversion (maybe this could be done on import to calibre).

I'm going to try KindleUnpack tool to see what changed and go from there, but welcome for any other suggestions or insights others might have.

07-30-2022, 05:32 PM	#1
tomsem Grand Sorcerer Posts: 6,942 Karma: 27060153 Join Date: Apr 2009 Location: USA Device: iPhone 15PM, Kindle Scribe, iPad mini 6, PocketBook InkPad Color 3	AZW3 support on PocketBook issue PocketBook has been updating various models to add AZW3 (KF8) support. I just got a PB Era a week ago and I thought it lacked this feature because I was getting a 'corrupt or copy protected' error when opening them. These were just the AZW3 files downloaded from Amazon Content page, imported into calibre with DeDRM plugin. I thought they'd be good to go, but evidently, there is something 'wrong' as far as PB is concerned. However then I created a 'fresh' AZW3 from an ePub, and it opened just fine. And then I took the AZW3 that failed, did a AZW3 to AZW3 conversion, and that opened just fine. I'm not sure at this point if there is any reason to prefer AZW3 over an ePub file created from one (the AZW3 converted from AZW3 looked ugly compared to the ePub conversion). But I'm wondering what gets tweaked during the conversion to AZW3, and which of these tweaks is required for PB to accept it as 'good' without a 'full' conversion (maybe this could be done on import to calibre). I'm going to try KindleUnpack tool to see what changed and go from there, but welcome for any other suggestions or insights others might have. Last edited by tomsem; 07-30-2022 at 05:37 PM.