Quote:
Originally Posted by DeepVoid
I really thank you for your hints, guys!!! 
I managed to solve the issue with some little workarounds, and above all I was able to use the "Send to Kindle" webservice to sync the epub file with its hyphenation to my Amazon cloud!!!
So, no need for sideloading the book, which would have ended in the know issue of the lacking cover and the unability to sync the book across all my devices.  |
Calibre has a work around for missing covers. If you have WiFi on and the cover get lost, just plug the Kindle back into Calibre to have he covers sorted. It's that easy.
One thing you have to do that I don't do is turn on WiFi every time you want to add books. It means you then upload all kinds of stuff back to Amazon.