To give context I have a Kindle Scribe, which doesn't wipe covers when I upload via File Explorer, so there's no need for Calibre, just leave the Kindle plugged in during the conversion process to upload the cover.
When I tried to use Calibre, I felt the need to update the author metadata of the KCC MOBI files. After uploading these edited files via Calibre, my Kindle became really unstable and crashing a lot. When I tried to upload further files to the Kindle Scribe the file transfer would frequently fail or freeze or crash the Kindle. It was really bizarre. All the problems went away when I deleted all the Calibre uploaded files from my Kindle. This was a weird occurrence, maybe it happened since I tried to change the author metadata. I think I was using Calibre 6.14.1 or somewhere around there.
So now I just use File Explorer to upload files directly.
And CBR/RAR/WinRar just give me issues in many context even outside of KCC.
|