I have bought Yamaha R-N800a and trying to access the advanced menu following the steps provided in the manual (attached) but it doesn't work and always the device open into the normal menu.
Do anyone can advice?
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Connect it to your router with an ethernet cable- DO NOT use WiFi for any updates or anything else, IMO. Wired works, WiFi MIGHT work.
Look for a button called 'Initialize' in Advanced Settings.
Once it has finished, turn it on and go into the Network area to find its IP address. Once you have found that, use a computer or tablet to open a browser window and type the IP address followed by /setup
Using a computer is far better than using an app or the remote with the menu on the display.