Firmware Version 1.1.4 is for cameras with firmware up to Version 1.1.3. If the camera's firmware is already Version 1.1.4, it is not necessary to update the firmware.
Please note: After the firmware update has been performed the following setting will be reset to default.
Menu > Custom Function> C.Fn II: Autofocus > AF Microadjustment> 1: All by same amount
When updating the firmware of the camera, please review the instructions thoroughly before you download the firmware.
Download Firmware Version 1.1.4 for the EOS 6D Camera
B&H carries the Canon EOS 6D.