Firmware Changes

This firmware update (Version 1.2.5) incorporates the following fixes.

  1. Corrects a phenomenon in which a displayed image becomes pitch-black if it is zoomed in on during Live View shooting.
  2. Corrects a phenomenon in which "busy" may continue to appear on the camera if the USB cable is disconnected during USB communication.
  3. Changes the error indications that are displayed on the camera. The error indications are further clarified to make the causes of errors easier to identify, and so that adequate support can be provided to our customers.

Firmware Version 1.2.5 is for cameras with firmware up to Version 1.2.3. If the camera's firmware Version 1.2.5 has already been installed, it is not necessary to update the firmware.

Before downloading the firmware update, please be sure to read the entire contents of this page.

Firmware Q&A

If there are any questions, please contact one of the following:

For USA and all other regions, except Europe:

The Canon Customer Support Center mentioned in the Camera User Guide

For Europe:

The Local Canon Distributor listed in the Canon European Warranty System List (EWS)

End User Licence Agreement

Download

Instructions

Windows® : Right-click the link, and save the PDF file.
Mac OS : Click the link while pressing the Control key, and then select "Save (Download)" from the menu that appears.

EOS-1D Mark III Firmware Update

Input the serial number of the EOS-1D Mark III, and click the [submit] button.