[Rubberducky1324]

> I find it so strange that Profile 7 is effectively unsupported outside of Blu-ray players and this one device.

Since DV Profile 7 is only used for Blu-Ray discs, and playing backed up BR copies from a non BR player is not really supported, it kind if makes sense that it's not supported.

For the Ugoos device, I'm not sure, but I thought the chipset inside supports it, but you still need to flash custom firmware (CoreELEC) and provide a Dolby Vision file to unlock this. So it's not supported out of the box.