I just got a Mi Box 3 and can't seem to get HDR to work. When using my Xbox, ps4, or built in TV apps with HDR content an HDR or Dolby Vision logo pops up in the top right corner. I've yet to see that happen with anything using the mi box - tried Netflix, Google play movies and TV (which is the entire reason I bought it), and YouTube with no luck. Anyone else ever have this problem and know what I'm doing wrong, or did I maybe get a defective one? I've tried all 3 HDMI ports and have switched to using the cables that I use on the PS4 and xbox with no luck. Thanks!
If you haven’t updated the OS from Marshmallow to nougat(Beta) then there’s no way for HDR to work. This should be clearly indicated on the box of mibox. It’s been more than a year already but until now we’re still hoping of the official non-beta nougat update.