fitting backup camera

[Sir0cco]

Ok. So also me I finally made a mess in my XC90.

I have enabled Today the backup camera -> in 2016/2017 models of XC90 the backup camera requires PAC360 module to be installed.
This one is not a simple cable from IHU to backdoor handle. There is a CANBUS unit in between.

It goes like following:
1. cable from IHU (radio) to PAC unit (located under passenger feet) (separate harness - #1)
2. cable from WAM/PAC to power +12V and to CAN bus (secure one, same for BLIS) - harens #2
3. cable to camera in the back door handle - harness #3
4. camera in the handle - 6PIN

Success in a way that IHU sees the unit - allows to turn on the camera view. But the camera window itself is black black.

Has anyone done it already?

The manual says that after installation of hardware - volvo requires a "software reload"
Is this reload only configuration or indeed it is some kind of pairing with the main unit?

Cheers, k.