Txnr646 Firmware Update: 2021

If you try to update and it fails:

The last official firmware update specifically for the Onkyo TX-NR646 was released on December 1, 2020 (Version 1110-6060-1106). While there were no major feature-adding firmware releases specifically for this model in 2021, general maintenance and security updates for the Onkyo lineup during that year (such as the January 14, 2021 update for similar models) focused on TIDAL login security and TuneIn Radio stability. Key Features of Version 1110-6060-1106

This cumulative update addressed several operational issues to ensure the receiver's long-term usability:

Web Setup Fix: Resolved an issue where customer settings could not be changed via the web setup menu.

Sirius XM Support: Fixed a bug that prevented song information from displaying correctly during Sirius XM radio playback.

System Stability: Included previous minor bug fixes and performance improvements to the internal 32-bit DSP engine. How to Perform the Update

You can update your TX-NR646 via a stable network connection or a USB drive. Via Network (Recommended)

Press Home on your remote and navigate to System Setup > Miscellaneous > Firmware Update. If an update is available, select Update Via NET. txnr646 firmware update 2021

The process typically takes 30–40 minutes. Do not turn off the power until "Completed!" appears on the front display. Via USB

While there were multiple firmware updates released for Onkyo receivers throughout 2021, the Go to product viewer dialog for this item.

specifically did not receive a new update that year. Its final official firmware release was version 1110-6060-1106 , which arrived on December 1, 2020.

If you are looking for the story of its "2021 status" or how to ensure it is at its final peak performance, here is the detailed breakdown: The Final Chapter: December 2020 Update The last major effort to refine the

occurred just as 2020 ended. This update focused on internal stability and web-based control:

Web Setup Fixes: Resolved an issue where users couldn't change customer settings via the web setup menu.

Metadata Accuracy: Fixed a bug that prevented song information from displaying correctly for Sirius XM radio. If you try to update and it fails:

Stability: General minor bug fixes to ensure the receiver remained reliable as a legacy device. Why People Searched in 2021

The search for a "2021 update" likely stems from a wave of updates that Onkyo released for newer models (like the Go to product viewer dialog for this item. Go to product viewer dialog for this item. Go to product viewer dialog for this item.

) throughout that year. These updates addressed evolving streaming standards that the no longer officially supported:

January 2021: Newer models received a TIDAL security enhancement and TuneIn Radio logo fixes. June 2021 : The

added a Klipsch Optimized Mode and expanded Sonos device support. November 2021: Models like the

received a fix for TIDAL FLAC audio converting incorrectly to AAC. How to Confirm Your is Up-to-Date

Even without a 2021 release, you should ensure your unit is running the final 2020 version to avoid issues with AirPlay or WiFi. The last official firmware update specifically for the

Check Version: Press SETUP on the front panel, go to 8. Misc > 8.1 F/W Update, and scroll to find the Version number. The Target: Your version should be 1110-6060-1106.

Update Method: While network updates are possible, Onkyo recommends using a USB drive for a more reliable installation. Format a USB stick to FAT32. Download the firmware from the Onkyo Product Support page.

Extract the files to the root of the USB drive and initiate the update through the receiver's menu. TX-NR646- Owner's Manual - Onkyo Product Support

Even though we are past 2021, applying this firmware update is still strongly recommended if your TX-NR646 has not been updated since purchase. Here’s why:

Note: Onkyo has not released any official firmware for the TX-NR646 after 2021, meaning this is the last available update.

Some users reported post-update glitches. Here’s how to resolve them:

By 2021, the TX-NR646 was no longer receiving new features (like HDR10+ or VRR, which the hardware doesn't support). However, this update focused on system stability and network security.

Cause: HDMI-CEC/ARC settings reset to defaults.
Fix: Go to Setup → Hardware → HDMI → Set HDMI CEC to On and Audio Return Channel to Auto.