Firmware Notice: EOS-1DX Mark III: Firmware Version 1.9.0

Firmware Version 1.9.0 incorporates the following fixes and enhancements:

  1. Enables up to 2 TB to be used on CFexpress cards larger than 2 TB.
  2. Fixes an issue that may cause the camera, in rare instances, to stop functioning when using GPS.
  3. Enhances security for FTPS (File Transfer Protocol Security) connections.
  4. Fixes an issue that, under specific circumstances, may prevent the image from being displayed in the viewfinder or on the screen causing the camera to stop operating, or Error Code 70 may be displayed.

Firmware Version 1.9.0 is for cameras with firmware up to Version 1.8.0. If the camera's firmware is already Version 1.9.0, it is not necessary to update the firmware.

Please download the EOS-1D X Mark III Advanced User Guide (PDF) as well as the most recently released software applications.


Download Firmware Version 1.9.0 for the EOS-1D X Mark III.

If you have not already done so, please register the EOS-1D X Mark III. By registering, we will be able to notify you via email about future announcements.

This information is for residents of the United States and its five territories only. If you do not reside in the USA or its five territories, please contact the Canon Customer Support Center in your region.

Still need some help? In order to get more personalized and faster support, we recommend registering your product in your Canon Account.

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