I researched little and come to this:
When I copy book to KV thumbnail is created in \system\thumbnails\ folder on my device with name thumbnail_*GUID*_EBOK_portrait.jpg. *GUID* is from EPUB contained in AZW3 in <dc:source> tag "calibre:GUID".
When I connect to wifi (cover is changed obviously) and another file is created in same folder with name thumbnail_*ASIN*_EBOK_portrait.jpg. The last one is the one which I see in cover view mode.
Last edited by tono1020; 02-24-2015 at 01:39 PM.
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