The controller board must be powered by its 12V DC adapter during the process.
A: Only if the firmware supports HDMI input and the PCB has the physical HDMI connector. M.nt68676.3 boards usually have HDMI, but some are hardware-limited. M.nt68676.3 Firmware
To understand the firmware, one must understand the hardware it drives. The NT68676 is a highly integrated SoC designed by Novatek Microelectronics. It functions as the "brain" of a display interface board. The controller board must be powered by its
Common utility used on Windows systems to burn the firmware bin file to the controller board. M.nt68676.3 Firmware
3.3 Security Primitives