If your receiver is still running original or pre-2021 firmware, performing this update is one of the most effective ways to extend its usable life. The process is free, takes under an hour, and dramatically improves reliability with 4K sources, gaming consoles, and streaming apps.
For owners of the Onkyo TX-NR646 network A/V receiver, keeping the firmware up to date is crucial for maintaining optimal performance, unlocking new features, and fixing known bugs. While the TX-NR646 is a 2015-2016 model, the 2021 firmware update cycle represented one of the most significant maintenance releases in the device’s lifecycle. txnr646 firmware update 2021
You can check your current version by pressing on the remote → going to Setup → Miscellaneous → Firmware Update → Version . If your receiver is still running original or