title_body: How do I repack a .mobi file? I used Kindle Unpack in Calibre to unpack a .mobi file, so I could correct mistakes in images and text. It was easy - images were JPGs or JPEGs and text was .html or .htmlx files. Now I need to repack it all as a .mobi file and I'm stumped. The folders I have before me are now:
  
  
  HDimages (empty folder) 
  mobi7 
  mobi8 
  META-INFO 
  OEBPS 
  mimetype
  kindlegenbuild.log
  
  
  (it looks like the the last 4 all go back into a kindlegenbuild.zip file.
  
  I've looked for a plugin for Calibre that does it, but no luck.
upvoted_answer: KindleUnpack is primarily intended for debugging KindleGen issues. If your original Kindle books is an AZW3 book or a MOBI book generated with KindleGen, you can edit it with Calibre Editor. 
  
  Simply select the book in Calibre, right-click it and select Edit book. This will automatically unpack the book and open it in Calibre Editor. If you save the book it'll be automatically reassembled.