: Ensuring the HDCP 2.2 handshake remains stable for 4K video content. Step-by-Step Update Guide (USB Method)
into the front panel port (not the back). Yamaha Rx-v379 Firmware Update
Warning: Do not power off the receiver during this process. It can brick the unit. : Ensuring the HDCP 2
Press and hold the Straight button on the front panel, then press MASTER ON/OFF . then press MASTER ON/OFF .