Quote:
Originally Posted by theducks
1st: Install the Plugin 
2nd: then configure (use 'save' if you want to do this way frequently) a) to Insert or Replace Cover b)Add/Replace metadata Jacket c)Update metadata 
3) run it (click OK) |
You are forgetting now calibre has the ability to update metadata using polish book option. So metadata can be updated without the modify epub plugin. Although I still use it as well