To update the unit, you must use a compatible USB storage device. Check for Updates : Navigate to the menu on your TV screen. Go to and select Check for Update to see if a newer version is available. Prepare USB
Before updating, verify your current version to see if an update is necessary: Power on the receiver. button on the remote. Navigate to Check for Update Checking the information to view the current version. 2. Prepare the Update (USB) denon avrx520bt firmware update top