XPS 9550 + 4K panel screen flicker thread.

Let's get a list of who has the 4k panel & screen flicker at any brightness setting so I can present this to Dell the next time I call and they tell me they have never heard of this problem before (the default response)
If you have the FHD (1080) panel please don't reply as the initial fix seemed to be aimed at the FHD customers that in turn broke our 4k panels.
Dell may need to split the BIOS into 2 to fix specific panel types so we need to get a case going.

Please list the BIOS versions...

XPS 9550 + 4K panel screen flicker thread.

XPS 9550 + 4K panel screen flicker thread.