If the update fails or hangs, avoid unplugging the power cord immediately. Try restarting the process if the unit remains responsive.
Wait for the progress bar to finish on your TV or receiver display. Do not power off the unit until it states . txnr646 firmware update 2021
Fixed an issue where song information for Sirius XM radio was not displayed correctly. If the update fails or hangs, avoid unplugging
Here is a helpful guide regarding the firmware updates for this receiver, specifically focusing on the 2021 timeframe and the overall status of the unit. Do not power off the unit until it states
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for a more reliable installation rather than a wireless connection. Hardware Vulnerability
Have you performed the txnr646 firmware update 2021? Share your experience in the comments below, or visit the AVSForum TX-NR646 owners’ thread for advanced troubleshooting.