title_body: How do I determine the latest firmware version for a Bookeen Odyssey?
upvoted_answer: If you sync via WiFi you should get version 5.2 build 1894. You can check if you have that version via the Settings &rarr; About ... menu.
  
  The manual download page might be out of date with the actual version of CybUpdate.bin you download from there, or the download itself might be the 1780.
  
  I have never tried to install that 1780 version as my Bookeen came with build 1894 and has not wanted to upgrade via WiFi (so I assume I have the latest version).