Canon EOS-1D X Firmware Update 1.2.1
Canon has issued a firmware update for the Canon EOS-1D X digital SLR camera. Version 1.2.1 incorporates the following bug fixes and improvements:
1. The function to disable the Image size selection button has been added.
2. Fixes a phenomenon in which Err 70 and Err 80 may occur during certain shooting conditions.
Website: Canon U.S.A.