After updating, always do a "Factory Reset" (while powered on, hold down "Tuner Preset Ch +" and "Zone 2 Source" until the display flashes), then re-run Audyssey. This clears out old code fragments and makes the new firmware run 30% faster.
In the world of home theater, the phrase "if it ain't broke, don't fix it" rarely applies. Modern AV receivers are essentially computers with high-powered amplifiers. To keep your system running smoothly, support the latest 8K standards, and unlock new features, performing a release is essential. denon avr update firmware new