Bro ,use this below process you will get HDR
1. Don't sitch on STB,Switch on Tv First.
2 . Let the TV boot and show No Signal in HDMI
3. Switch on Xstreme STB now
4 . After Xstreme Box booted,switch to HD channel
5. Then go to settings and reboot stb
6. Now,Go to Netflix or Prime Video you will see HDR enabled
Done