Txnr646 Firmware Update 2021 !exclusive! May 2026

For the Onkyo TX-NR646 Go to product viewer dialog for this item.

Should You Install It in 2024 or later?

Detailed Changelog: What the 2021 Update Fixes and Adds

for a more reliable installation rather than a wireless connection. Hardware Vulnerability txnr646 firmware update 2021

• HDMI CEC: Set to Off (unless you need it; the patch improved it but didn't perfect it).
• Video Signal: Set to "Auto" (allows Dolby Vision detection).
• Network Standby: Set to "Off" (prevents the TX-NR646 from overheating while sleeping, a known 2021 patch issue).

• Patches the "Tidal app freezing at 30 seconds" bug.
• Updates SSL certificates for Wi-Fi security (WPA2 stability).
• Improves Spotify Connect discovery on iOS 15 devices.

• Faster boot time (reduced from ~12 seconds to ~9 seconds).
• Fixed a bug where the front panel display would freeze when using USB playback of FLAC files >96kHz.
• Updated the OSD (On-Screen Display) for 4K passthrough—less clipping at the edges.