book covers not updating from calibre to send to kindle

[pbessie]

hi yall! i'm using a 2024 kindle basic, fyi.

i've been updating some of the covers of my books in my calibre library. these books are already downloaded on my kindle. when i add the new cover in calibre and then drag to send-to-kindle, the book cover shows the OLD cover instead of the new cover. i've tried deleting the already installed books with the old cover to re-upload with the new cover, and the same thing keeps happening.

this is happening for newly installed books as well. i download a book, upload it to my calibre library, change the cover in calibre, but once i send to kindle, the ORIGINAL (ugly/low quality) book cover that was downloaded with the ePUB appears in my library.

i am on calibre 8.10, my kindle is up to date completely. i don't know how to fix this, i just want new book covers! (i just updated my calibre to the latest version yesterday, and now i'm regretting it. i didn't have this issue before!)

[DNSB]

Are you embedding the covers into the ePubs before using StK? Using either Polish or Modify ePub would be the easiest way to do this. For USB copied books, if you are sending an ebook with an EBOK cdetype and an ASIN that matches an existing Amazon ebook, Amazon will update the cover when connecting to Amazon's servers. calibre can not work around this for MTP connecting Kindles which I seem to remember the 2024 Kindle Basic is since the system directory containing the thumbnails folder is no longer accessible.

[tomsem]

Originally Posted by DNSB

Are you embedding the covers into the ePubs before using StK? Using either Polish or Modify ePub would be the easiest way to do this. For USB copied books, if you are sending an ebook with an EBOK cdetype and an ASIN that matches an existing Amazon ebook, Amazon will update the cover when connecting to Amazon's servers. calibre can not work around this for MTP connecting Kindles which I seem to remember the 2024 Kindle Basic is since the system directory containing the thumbnails folder is no longer accessible.

To add to this, MTP Kindles will generate cover thumbnails for side loaded books if they are marked as PDOC (personal document). It's the default for KFX but not for AZW3/MOBI, where you have to check 'enable sharing' option.

[DNSB]

Minor nit. You can enter PDOC or EBOK in the mobi ouput configuration (strictly speaking, you can put any 4 characters inside the [....] but I've never done a conversion to mobi so not sure what if any error checking is done). KF8/azw3 does require enable sharing be enabled in the azw3 output configuration to set cdetype as PDOC.

[pbessie]

Originally Posted by DNSB

Are you embedding the covers into the ePubs before using StK? Using either Polish or Modify ePub would be the easiest way to do this. For USB copied books, if you are sending an ebook with an EBOK cdetype and an ASIN that matches an existing Amazon ebook, Amazon will update the cover when connecting to Amazon's servers. calibre can not work around this for MTP connecting Kindles which I seem to remember the 2024 Kindle Basic is since the system directory containing the thumbnails folder is no longer accessible.

yes, this worked! it took me a little while to find the embed feature, but now my books are properly updated w/ the correct/desired covers. thank you kindly!