Canon has released firmware updates for the Canon EOS-1Ds Mark II and EOS-1D Mark II.
Both updates rectify problems in both cameras caused by previous firmware updates, which caused the camera to freeze and the display to appear abnormal when the Display button is pressed directly after shooting.
Firmware update 1.1.3 for the EOS-1Ds Mark II corrects the problem in cameras that have been installed with update 1.1.2. Firmware update 1.2.3 rectifies the problem in those units of the Canon EOS 1D Mark II that feature update 1.2.2.
For more detailed information or to download the updates go to:
http://web.canon.jp/Imaging/eos1dsm2/eos1dsmk2_firmware-e.html and
http://web.canon.jp/Imaging/eos1dm2/eos1dmk2_firmware-e.html