EOS-1D X Mark III Firmware Update, Version 1.6.2

Firmware Version 1.6.2 incorporates the following fixes.
1. Fixes an issue that, in rare cases, displays an Error Code 70 after the camera has been connected to a network for a prolonged period of time.
2. Fixes minor issues.

If the camera's firmware is already Version 1.6.2, it is not necessary to update the firmware.

Preparations for the Firmware Update:
In the folder you downloaded are the firmware (1DX30162.FIR / file size: 65,844,240 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 carefully review the instructions to confirm your understanding of the firmware update procedures.

Firmware download link:
https://www.canon.com.au/cameras/eos-1d-x-mark-iii/support?option=drivers