Canon USA has just released a new firmware update for the Canon EOS 6D Mark II(B&H Photo/Amazon/Adorama/Canon Direct Store). This firmware version is V. 1.0.3, just fixed a small issue, see below:
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.