Canon EOS-1D X Digital SLR Camera Firmware 1.2.4

Fixes:
- Improves the speed of the camera's acquisition of focus when using a Canon Speedlite's AF-assist beam.
- Reduces the time it takes to display the metering result on the LCD or Viewfinder when the meter has been activated.
- Fixes a phenomenon in which a "Caution 02" message is unnecessarily recorded in the camera status log.
- Fixes a phenomenon in which continuous shooting pauses when using a Canon Speedlite.
- Fixes a phenomenon, when the Canon GP-E1 is attached, in which the GPS device settings are reset to default settings when the camera has been powered off.

Note:

- This phenomenon occurs only with firmware Version 1.2.1.
- After changing the GPS device settings, please be sure to power off the camera before removing the battery. This will ensure that the camera's GPS device settings will be saved.
- Firmware Version 1.2.4 is for cameras with firmware Version 1.2.1 or earlier. If your camera's firmware is already Version 1.2.4, it is not necessary to update the firmware.
- The firmware update takes approximately seven minutes.