Firmware Version 1.2.1 incorporates the following improvements and fixes.
■Extends the timing at which the high temperature warning indicator is displayed and the timing of automatic shut down of the camera due to a rise in internal temperature during Live View or EOS Movie functions.
■Optimizes program shift when the ISO setting of the camera is set to AUTO.
■Corrects a misspelling in the French-language menu.
■Corrects a phenomenon in which vertical magenta-colored banding appears in still images taken in movie-shooting mode.(This only occurs when in Manual exposure mode and when the ISO speed is set to “H”. Note that this phenomenon only affects units with Firmware Version 1.2.0)