"Canon has today posted a firmware update for the EOS-1D Mark II digital SLR. This new firmware addresses three issues: "1. The screen becoming magenta-colored when shooting bulb exposures, 2. The values being cleared when C.Fn-06 is set to “2” and the battery is removed, 3. Improves image quality of NTSC video output". Updating is very easy, drop the firmware update file onto a Compact Flash or SD card, insert it into the camera and select the Firmware option from the camera menu."
Canon 1D Mark II Firmware Update
Threaded Mode