CAN Firmware Update Mandatory?

[wildaburk3160]

Now that the PMC firmware is updated, the Status light is flashing green. We have a solenoid being successfully activated by a button push on the controller.

But our compressor won't turn on. We've followed all the instructions as far as wiring goes, with the only deviance being that we used regular black and red wires instead of the green and yellow "CAN" wires.

We tested the Compressor Out ports on the PCM and we don't get any voltage back, even though the rest of the PCM seems to be working without a problem.

I am at a loss as to what the issue is. So, does anybody have any ideas?