EOS-1D X Mark III Firmware Update, Version 1.2.0

27th August 2020

Firmware Version 1.2.0 incorporates the following fixes and enhancements:

1. Enhancements when using Browser Remote:
-    The image list displayed will be refreshed automatically on the browser.
-    On the shooting screen of the browser, you can set the movie resolution and a high frame rate
-    On the shooting screen of the browser, you can change the movie shooting mode.
-    On the shooting screen of the browser, Live View will be displayed as soon as you select the movie shooting button. 2. Enhances Auto Focus (AF) for improved face and eye recognition at greater distances.
3. Fixes a phenomenon that may occur during viewfinder shooting, in which the shutter may not be released or the camera may not operate in the following settings:
-    In One-Shot AF mode, when the AF Area Selection Mode is set as Zone AF, Large Zone AF or Automatic Selection AF.
-    In AI Servo AF, when direct AF point selection is made using the smart controller.
-    When the Register/Recall Shooting Function is assigned to the AE Lock button, in the Custom Controls. 4. Connectivity during FTP transmission, has been improved.
5. Improves Wi-Fi connectivity when using the Wireless File Transmitter WFT-E9.
6. Fixes a phenomenon, in which the card access time may take longer, when using certain CFexpress cards.

Firmware Version 1.2.0 is for cameras with firmware up to Version 1.1.0. If the camera's firmware is already Version 1.2.0, it is not necessary to update the firmware.

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.

Q&A Section:
Preparations for the firmware update:
In the folder you downloaded are the firmware (1DX30120.FIR / file size: 81,205,840 bytes) and instructions on the firmware update procedures (a PDF file in five languages: Japanese, English, French, Spanish, and Simplified Chinese). Before starting the firmware update operations, please be sure to check the procedure in accordance with the instruction.

Firmware download link:


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