Canon has released firmware update 1.0.four for the EOS 6D Mark Ii, adding of import bug fixes for “rare instances” of issues with the touch panel and operation buttons. The update, which is bachelor from Canon’s support website
here, is nigh 30MB in size and includes the following changelog:

Firmware Version 1.0.4 incorporates the following fixes:

i. Corrects a miracle in which in rare instances, the operation buttons and some bear upon panel functions exercise not respond.

Via:
CanonRumors