Yes, many VIANO TV software updates specifically fix HDMI handshake issues causing the “No Signal” message even when a device is connected.
This is perhaps the most common reason Viano owners delve into software hacking. Mercedes, adhering to strict (and somewhat dated) safety regulations, programs the TV tuner and DVD player to cut out the moment the vehicle moves above walking speed. viano tv software update
If your Viano TV includes a connected navigation/COMAND head unit (e.g., Audio 20 or COMAND APS): Yes, many VIANO TV software updates specifically fix
: Try a different USB port or a different USB drive (some older TVs are picky about USB 3.0 drives). viano tv software update