Canon have released a new firmware update (version 1.2.3) for the EOS-1D Mark II DSLR.

This firmware update (version 1.2.3) includes the following additional functons and improvements:

* With the version 1.2.2 firmware, pressing the DISPLAY button right after shooting images resulted in an abnormal display and the camera would freeze. Images are not lost when this occurs. Also, removing and then reloading the battery restores the camera to normal operation. This version 1.2.3 firmware incorporates fixes for the issue described above.

Website: Firmware Update Version 1.2.3