Welcome to this short tutorial on how to upgrade the firmware on your Denon Cocoon Home and Denon Cocoon portable.
（1） First, please make sure your Denon Cocoon is connected to the mains and to the internet. Preferably with an ethernet cable.
（2） Tap the plus and minus button simultaneously. After this, "language" will appear in your display.
（3） Now please tap the minus button 3 times until "firmware update" appears in the display.
（4） Tap the "play/pause" button and "check for update" will appear.
（5） Now tap the "play/pause" button again and wait until "available:no" appears in the display
（6） Tap the "minus" button and "available:yes" will appear.
（7） Tap the "play/pause" for the last time and wait for the Denon Cocoon to connect to the Denon update servers and start the update process. After "dock" appears in the display, your update succeeded and you can start using your Denon Cocoon again.