The Canon EOS-1D X Mark III is Canon's flagship professional DSLR, featuring a 20.1MP full-frame sensor, 16fps mechanical shooting, and 5.5K RAW internal video. It introduced deep learning autofocus and improved low-light performance over its predecessor for professional sports, wildlife, and photojournalism.
Product released: February 13, 2020
Latest firmware version
Version 1.9.0, released March 15, 2024
Last checked for updates: Oct 31, 2026 03:42 UTC
What's new in version 1.9.0
Firmware Version 1.9.0 incorporates the following enhancements and fixes: 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. If the camera's firmware is already Version 1.9.0, it is not necessary to update the firmware. Notes: Users manual in the WEB is updated accordingly. Please download the manual as well as the latest firmware. You can download it from the official WEB site.
The Canon EOS-1D X Mark III is Canon's flagship professional DSLR, featuring a 20.1MP full-frame sensor, 16fps mechanical shooting, and 5.5K RAW internal video. It introduced deep learning autofocus and improved low-light performance over its predecessor for professional sports, wildlife, and photojournalism. It was originally released on February 13, 2020.
What is the latest firmware version of Canon EOS-1D X Mark III?
The latest firmware version of Canon EOS-1D X Mark III is 1.9.0. It was released on March 15, 2024.
What changed in Canon EOS-1D X Mark III firmware version 1.9.0?
Canon EOS-1D X Mark III firmware version 1.9.0 includes the following changes: Firmware Version 1.9.0 incorporates the following enhancements and fixes: 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 Err...
Where can I download the latest Canon EOS-1D X Mark III firmware?
Details and download instructions for the latest Canon EOS-1D X Mark III firmware (version 1.9.0) are on Canon's official release page: https://www.canon.co.uk/support/consumer/products/cameras/eos/eos-1d-x-mark-iii.html?type=firmware