Canon released a firmware update for high-level professional camera Canon EOS-1D X. Canon EOS-1D X firmware update 1.2.1 contains the following improvements and fixes.
Canon EOS-1D X Firmware 1.2.1
- The function to disable the Image size selection button has been added.
- Fixes a phenomenon in which Err 70 and Err 80 may occur during certain shooting conditions.
Download firmware 1.2.1 here
