A: Yes – firmware controls the mute pin, volume curve, and AV audio routing. Some versions disable the 3.5mm jack.
Firmware is the software that is embedded in a hardware device, controlling its behavior and functionality. It's essentially the device's operating system, managing the interactions between the device's hardware components and providing a layer of abstraction for the user. M.nt68676.3 Firmware
Most versions of this board have a hidden "Factory Mode" menu accessible through a specific button sequence to fine-tune panel settings without reflashing. A: Yes – firmware controls the mute pin,