Steps

In the Plaato app go to the "Debug Tab"

You will see Firmware Version at the bottom of the page

To check for firmware updates for your Plaato Keg click the options menu

Click "Check for Firmware Update"

Within a minute the Plaato Keg will check if there are any firmware updates

If there is an update the Plaato Keg will automatically download the new firmware.

During this, the middle LED will blink asynchronous with the two outer LEDs