[xiatian]

Originally Posted by kovidgoyal

I dont recall, probably it does if it has up to date firmware. If all azw3 files sent to your kindle aren't opening, and it actually supports azw3, then you should read this: https://manual.calibre-ebook.com/faq...id-not-show-up

Found a solution to work around this.
I tried to convert it from .mobi to .azw3 (NOT from .epub to .azw3) and then it appeared in my kindle.