Nyon automatically notifies you of an existing software update if it is already connected to a Wi-Fi network and also to a power source via USB. After about a minute, the corresponding message appears on Nyon. Please follow the instructions on your Nyon.
You can also check for updates on Nyon yourself by going to "Settings > Connections > Wi-Fi On" in the menu and connecting Nyon to a Wi-Fi network. Then go to "My Nyon" and select "Search for updates". Nyon will search for software updates. If an update is available, you will receive a corresponding message. Connect the Nyon to your computer via USB and follow the instructions on your Nyon.