Canon EOS-1D X Firmware 1.2.1
Firmware Version 1.2.1 incorporates the following improvements and fixes:

  • 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 | Buy the EOS-1D X


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