I was realy happy with my xiaomi tv box gen 3,but yesterday, when i played Dolby vision content with nuvio/stremio the letter box bars are gray (i have oled TV). The black in the video part are black (not grey). I have the issue only when video à not 16/9 ratio (like 3840x1600)
Tried external players (kodi, just player,...) : Same problem.
Corelec does not have the issue, but i prefer android tv.
I didn't notice it before so mayby it isthe new firmware we got last week that broke somehow the dolby vision part.
Anybody with Oled TV have noticed this regression whith latest firmware?
Any way to get back to previous firmware to check?
PS : I found a workaround with setting source led dolby vision but i prefer sink led since the picture quality seems better (in bright lights part mostly).