Onkyo TX-NR646 Firmware Update 2021: Final Status and Guide Onkyo TX-NR646
Choose . (Note: If this option is grayed out, your receiver is not detecting an internet connection).
: Fixed a bug that prevented song information from being displayed during Sirius XM playback. Cumulative Stability : Includes all previous enhancements, such as improved DSD playback stability and compatibility. Installation Guide For older units like the TX-NR646, USB installation is highly recommended
As of 2026, it is important to note that the TX-NR646 has reached its final firmware lifecycle, with the last major updates focusing on stability rather than new features. However, if your unit is running an older version, applying the late-2021/early-2022 updates is crucial for addressing common issues. The November 24, 2021 Update This update was critical for streaming enthusiasts: txnr646 firmware update 2021
Unzip the file and copy the contents to a FAT16 or FAT32 formatted USB stick. Plug the USB into the front panel port of the Go to > Misc > F/W Update > "Update via USB" . Troubleshooting Tips for 2021
While Onkyo actively rolled out software patches for its newer receiver lineups throughout 2021 and 2022, the legacy TX-NR646 received its definitive and final software release at the very end of 2020 (specifically , with the version token 1110-5060-1106 or 1110-6060-1106 ).
Note the 12-digit version number displayed on the screen (e.g., xxxx-xxxx-xxxx ). If it matches the final release ( 1110-6060-1106 ), your receiver is fully up to date. Step-by-Step Firmware Update Guide Onkyo TX-NR646 Firmware Update 2021: Final Status and
: If the update stalls, try unplugging all HDMI video sources and restarting the process. Users have found success after removing these cables during the update.
The Definitive Guide to the Onkyo TX-NR646 Go to product viewer dialog for this item. Firmware Update is version 1110-6060-1106
Before starting, from the receiver to prevent system noise or signaling conflicts during the update process. Method 1: Updating via USB (Recommended) The November 24, 2021 Update This update was
: Corrects a bug that prevented track metadata, song titles, and artist info from displaying properly during SiriusXM playback.
The Critical 2021 Firmware Update for the Onkyo TX-NR646: Why and How to Install It
or similar, depending on regional model variations like US/EU/Asia), an update is required. Methods for Updating the TX-NR646 Firmware