Thanks @PaulJohnston, I have tried it and it does find what seems to be the EDID of my screens.
Too bad it is not an opensource application so we can have a glimpse on how they did it.
I am still stuck with trying to get it from IODPDevice but I did not get any chance yet.
MaxLeb
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Did you just replace IODisplayConnect by IODPDevice and the iteration worked out of the box ?