: Do not turn off the power or unplug the unit during the update; doing so can "brick" the device.
Updating the firmware on your Denon AVR-X520BT is an essential maintenance task that can bring a range of benefits, including improved performance, new features, and security patches. By following the steps outlined in this article, you can easily update the firmware on your receiver and ensure that it continues to function optimally. If you encounter any issues during the update process, refer to the troubleshooting tips provided above.
of the USB drive. Do not use folders or subdirectories unless specifically instructed by the download readme.