Quote:
Originally Posted by jhowell
It used to be possible in Kindle firmware prior to version 5.8.5 to sideload a JPEG cover image thumbnail via USB and have that shown for a personal document. Software was created that would do this automatically. But Amazon changed the firmware to specifically disallow this. I have looked at the change and it appears to have been done intentionally, not introduced as a bug.
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This post implies that manipulation of /var/log/cc.db might work. That would require jailbreak, of course.
https://www.mobileread.com/forums/sh...31&postcount=6