Proceed as follows to see the current firmware version

Make sure your phone/tablet is connected to the same network as your speaker (you can see this under Settings/Device Connections). Open the Google Home app, select your device and tap the Cogwheel to open the Settings. Than scroll down to Information (at the bottom). Under Information, you can see the firmware version, cast version, language, country, MAC-address and IP-address of your device.


NOTE: Firmware upgrades are automatically downloaded and installed. When you configure your device (again) via the Google Home-app, the system will always check whether a software update is available.