I have never experienced any problems side-loading mobi files to my Touch via Calibre or drag and drop, regardless of firmware version.
Obvious question - is your Kindle recognized by your computer when connected? I assume so since you say you have transferred via Calibre. Have you searched for the "missing book(s)" when connected or from the Kindle when disconnected? Are you absolutely certain the file has not transferred? Do you receive "transfering book(s) to device" message (cannot recall the exact wording) when transferring via Calibre?
If you are using a Windows based computer can you confirm a valid connection in Device Manager?
Have you tried re-converting the mobi?
Last edited by Skydog; 05-10-2012 at 11:41 AM.
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