I've had this box for a while it does the job of playing 4k content well enough. However I have some issues and I'm wondering if anybody can clear them up. I just upgraded to the new Android 9.0 version as well.

Firstly HDR... so I enabled the SDR to HDR setting which seems to work. The issue is the HDR to SDR seems to do absolutely nothing. Which causes big problems when SDR content is playing. Its either unwatchable or displays odd coloured artifacts on the screen. It seems like theres no way for the box to automatically enable and disable HDR depending on the conent. Is anyone else having this issue.

Another Issue HDMI CEC works mostly without issues except one. When adjusting the volume with the Mi Box S Remote it controls volume of both the device its plugged into and the Mi Box... which is annoying. I haven't been able to find any other settings regarding this. I want it to control the volume of the device its plugged into isntead of the Mi Box or Just the Mi Box. Any one will be fine. I dont want to have to keep switching remotes... not the best experience.

Lastly Prime Video. Before Android 9.0 I had to side load the apk and I couldn't get 4k content. Now Since the Prime Video apk is installed from the vendor after the update. I tried it and I STILL cant get 4k content. Anyone experiencing anything similar.