Before you attempt to flash nortek-hd-box-r1-hdmi-firmware, verify that you actually need it. Perform a diagnostic:
If you answered "yes" to any of the above, read on. nortek-hd-box-r1-hdmi-firmware
The primary role of this firmware is to: If you answered "yes" to any of the above, read on
Older firmware may only support stereo PCM. Newer updates enable passthrough for Dolby Digital, DTS, and even Dolby Atmos, provided your network infrastructure supports it. and even Dolby Atmos