mrwebs

I have just bought a car that has a MDX-CA580 fitted and want to swap it for something newer but I can't work out how to remove it. Can anyone help please? I did find this manual Install Guide but my unit doesn't appear to be quite the same as I can't see any spring clip sticking out and there isn't a removable frame around the unit as per those diagrams. I'm now a bit stuck and would very much appreciate some guidance! Cheers Andy