We apologize sincerely for the inconvenience caused to our customers by suspending the availability of the Version 2.0.3 firmware.
We are now introducing the Version 2.0.4 firmware. This firmware corrects the malfunction that occurred in the previous Version 2.0.3 firmware, in which the manual recording level changed and made recording impossible.
Customers who have the Version 2.0.3 firmware on their cameras should update the firmware to Version 2.0.4.
Firmware Version 2.0.4 incorporates enhancements to the movie function and a fix to the manual sensor cleaning function of the EOS 5D Mark II camera.
Download firmware upgrade at: Canon