Canon released the latest Firmware 2.0.3 for the EOS-1D X in January. It is a major piece of software and improved the camera's features and capabilities. You can see some tips and tricks from Canon and read my review here. To see my work and photos taken with the camera from worldwide photo shoots, visit my website MichaelDanielHo.com.
Below is a video walk through and brief explanation of the Canon EOS-1D X's extensive menu system.