Canon EOS 6D Mark II Firmware Update Version 1.0.3 Now Available
Firmware Version 1.0.3 incorporates the following fix:
1. Corrects an erroneous display that may appear when some third-party accessories are attached to the hot shoe.
Firmware Version 1.0.3 is for cameras with firmware up to Version 1.0.2. If the camera’s firmware is already Version 1.0.3, it is not necessary to update the firmware.