Turn on the receiver and ensure it is connected to your router via Ethernet. Press the button on your remote control. Select Miscellaneous , then navigate to Firmware Update . Choose Update via NET and press Enter.
Download the firmware file from the Onkyo Support website . txnr646 firmware update 2021
This is the most straightforward method if your TX-NR646 is already connected to your home router via an Ethernet cable or a stable Wi-Fi connection. Turn on the receiver and ensure it is
Update your TX-NR646 to the 2021 firmware today—your ears and your HDMI devices will thank you. Onkyo TX-NR646 2021 patch
The December 2020 release resolved several persistent legacy issues:
txnr646 firmware update 2021, Onkyo TX-NR646 2021 patch, TX-NR646 Dolby Vision fix, Onkyo firmware 2130-1010-0200, update TX-NR646 via USB.