I just tried putting a new from motorola O9 control head on my APX7500, when it comes up it is in black and white only no colors at all on the display. i went through the control head test per the basic service manual and all of the colors and buttons worked as it is supposed to. i am running 8.00.00 firmware and 8.01 cps.

on a separate note i fondled an apx 7500 with an o3 on it over this weekend and i noticed it to was in black and white also. it belonged to federal leo so i didnt do much except switch through the channels.

is there a setting in the cps that i have not found yet or is this something that may be a flash option or firmware related?