Sorry – I’ve just looked at this.
The EDID issue you are experiencing won’t be related to a problem with the 4.9 test builds, because you aren’t running them.
You don’t have the 3D build installed either, which is why this isn’t working.
There are improvements to 4K HDR in the 4.9 build.
I would suggest installing the 4.9 build. See [TESTING] Linux 4.9 kernel and improved video stack for Vero 4K / 4K +. Until you do this, 3D MVC will never work.
A report back after doing this with a list of issues will then be useful.