[tyke99]

Copy the book from Kindle into Calibre

Save the book in Calibre. You don’t need to make any changes, Calibre will overwrite the book in its library.

Remove the book from your Kindle and from your iPhone or whatever. On your iPhone, fully exit the app (double click the Home button, press and hold the Kindle button and then select it when it wobbles). Reopen the Kindle app.

Copy the book from the Calibre library to your Kindle.

Copy the book from the Calibre library to your iPhone using iPhone Explorer. Note that using iTunes or Kindle’s email function will not work.
In iPhone Explorer you go to iPhone/apps/Kindle/library/ebooks.


Fully exit the app (double click the Home button, press and hold the Kindle button and then select it when it wobbles) then restart it.