G7 Screen blank

[Boostinu13]

Hello,

 

So looking at forums it seems the Samsung G7 looks nice but doesn't work well. I brought 1 g7 27 inch but had to return it due to a dead pixel.   My new one is great but I can only run it at 144hz if I go 240 I get some quick flickering/lines across or it even disconnects then reconnects. I have tried different ports and am using a displayport cable v1.4 plugged into my rtx3090. I tried to turn adaptive sync off on the monitor and g sync off on nvidia but it didn't help.

 

Heard this (exact this?) Is common and was fixed with a firmware upgrade but my screen is version M-TG700CCAA-1009.3 

 

Wondering if this was fixed and how?

 

Thanks