I have the one x. I think any console with HDR output would have the same issues. The green flashes to me look more like a encoding error on the tv's side. Also side note I do have my Xbox one x plugged into the mu7000 with a hdmi 2.1 spec cable which cleared up some issues I was having with weird latency and other colors flashing time to time.
Certainly 1260.6 is the latest firmware on the UK support site at the moment , have checked a few MU models. Just noticed 1262 is on the US site, however not advisable to download from there for European models.
Hi , 1260 only fix for Xbox?
It appears 1262 has solved the issue in US, it is now available (as of today) on UK support site for Mu models. One example here https://www.samsung.com/uk/support/model/UE49MU7000TXXU/
Hi I've been getting green flashes sometimes other colours white and black on my PS4 fire stick and my playstation mini classic basically I have the issue with anything I connect through HDMI is this the filmware or does the TV need repairing it seem to work fine when I first had then the issues must of started around the 1250 update as I noticed it when playing red dead redemption which came out in October