Check Your Current Firmware Version: Navigate to the “Setup” menu on your Denon AVR-591, select “Information,” and then “Firmware.” Note down the current firmware version. Download the Latest Firmware: Visit the Denon website, navigate to the support section, and search for the AVR-591. Download the latest firmware version available. Connect to the Internet: Ensure your Denon AVR-591 is connected to the internet via an Ethernet cable or Wi-Fi. Use a Stable Power Source: Make sure your receiver is plugged into a stable power source to prevent any interruptions during the update process.
Method 2: Updating via USB
Access the Setup Menu: On your Denon AVR-591, navigate to the “Setup” menu. Select “Firmware Update”: Choose “Firmware Update” and then select “Update via Internet.” Check for Updates: The receiver will check for available updates. If an update is found, it will begin downloading and installing the new firmware. Wait for the Update to Complete: The update process may take several minutes, depending on your internet connection and the size of the update. Do not interrupt the process or turn off the receiver. denon avr-591 firmware update