Phase One AF
Firmware version can be seen by setting the function dial to CF, Scroll to custom function 36 (C-36) and press the button “+/-“ (Exposure Compensation) it will show firmware version number on the LCD screen. The small 01 at the bottom shows the lens firmware version.
If this function does not exist or firmware version is lower then 1.0 then the firmware is obselete and camera should come to Phase One for firmware update.
Please contact your local Phase One dealer.
Phase One DF/DF+
Firmware version can be seen by setting the function dial to CF, Scroll to custom function 99 (C - 99). You will breifly see "C - 99" display in the upper portion of the screen, this will disappear and show the firmware version in the lower right of the screen.
*Custom Function 98 (C - 98) will display the current firmware of any lens that is presently attached to the camera.