I found my old PW1, charged it, and tested Kindle Unlimited concerning DeDRM ability. My DeDRM hasn't been updated since 7.2.1, because why fix what isn't broke. Also Calibre is on 5.34.0, because of the same reason. The issues will still be around, I am sure, unless a new version of Calibre has a more sophisticated book import. The outlook is bleak, I would say.
Here is what happens: If downloading an old book (published last year) that is borrowed in KU, but not purchased, with the PW1, then no issues exist (#2). The azw3 file that can be found on the PW1 goes right into calibre, DRM gets removed, and everything is in the book and in color. Newly published books behave quite differently. It does not matter if it is a purchased book (#1) or a borrowed book (#3), but the direct download to the PW1 (either initiated from the device itself or from computer with deliver to device) is incompatible with import to Calibre. First all images are black and white (no real issue here, I suppose), but more irritating is the missing images in the azw3 file except the title and thumbnail of the title. There now is a folder containing a lot of the missing data. On the book that I purchased (for free, one of First Reads) the Download and Transfer via USB file contains all images and in color. The other one that I didn't purchase, I obviously could not download via USB.
The three books in question for my test were:
- Feral: Losing Myself and Finding My Way in America’s National Parks (published Feb 1, 2023 - First Read purchased)
- Fated in Winter (Talon Pack Book 11) (published May 2, 2022 - borrowed KU)
- The Dark: A Post-Apocalyptic Thriller (published Jan 19, 2023 - borrowed KU)
Here is the difference of #1 in files (file names truncated):
Spoiler:
Download and Transfer via USB:
Code:
Feral...azw3 - 2225KB (the downloaded file)
After copying to the PW1, the PW1 creates the usual directory with two or so little files.
Direct download to device loads all these to the PW1:
Code:
documents/Feral...azw3 - 679KB (includes only title and thumbnail of title)
documents/Feral...sdr/AssetDownloadMetadata.meta - 1KB
B09..9.mf - 4KB
EndActions.data.B09..9.asc - 35KB
Feral...apnx - 2KB
Feral...azw6 - 959KB
Feral...phl - 1KB
Feral...azw3f - 1KB
Feral...azw3r - 2KB
LanguageLayer.en.B09..kll - 162KB
StartActions.data.B09..asc - 59KB
XRAY.entities.B09..asc - 80KB
#3 has about the same structure as #1 when downloaded to the device - both have only BW images. #2 is different, but that might be, because it doesn't have any pictures other than the title itself, but the cover is in color as it always used to be.