At the first connection, the update will be proposed automatically but also every time a new box version is available. The best procedure consists of switching OFF/ON the power supply. Then the update will start automatically.
You can also open your TaHoma app and click on “plus menu”, then select my box. Go to update of the box and let you guided step by step. If a newer version of the software is available select install the update now or install tonight. To always benefit from the latest updates you can also select in this section the automatic update of your box.