Nortek-hd-box-r1-hdmi-firmware [work] -

3.5 Firmware packaging and metadata

Visit the Nortek Software & Support Center to search for your specific model. Check for "Firmware" or "HDMI Update Tool" categories.

The open-source community has recently reverse-engineered the flashing protocol. There are now GitHub repositories hosting "unsigned" firmwares that unlock:

It looks like you’re looking for an related to the Nortek HD Box R1 and its HDMI firmware .

End of paper.