Update firmware

The Wilo-Smart connect app offers the function to update the pump software of a Wilo-Stratos MAXO.
For a pump software update, the update bundle for the pump must be present in the app before the connection to the pump is established. For this, the app must have been connected to the internet.
The app checks the internet for availability of current software bundles for pumps. During an update, the app downloads the latest software for the pump.
If the Bluetooth connection to a pump is established later, “Update Firmware” can be selected on the dashboard. The update process of the pump is started. The previously downloaded update bundle is used. This means that it’s also possible to update the pump at an installation site that doesn’t get Internet access.
The update process can vary greatly in length depending on the software version of the pump, the amount of changes in the update software and the connection quality. Transfer times of the update bundle may take just a few minutes or up to 2 hours.
Before the updated software elements are installed in the pump, the consistency of the transferred software is checked on the pump. The check lasts around 5 minutes.
During the SW transfer and the subsequent check, the pump continues to function. After the check, the distribution and installation of the new software to all system components of the pump is started. Among the components are:

• The pump logic itself (power electronics and control electronics)
• The temperature sensor (if present)
• The operating unit (display and operating elements)
• If applicable, an installed CIF module

The new software is installed for the pump logic first. The software is then rolled out for all other components.

NOTICE

During distribution, the pump temporarily stops operation, and the display remains off for a maximum of 20 seconds. The entire internal software distribution can last up to a maximum of 2 minutes, during which the pump will also temporarily not be pumping.

Even if the operating unit has not yet been fully updated, the pump will resume pumping according to the previously set control.

When the operating unit has been updated with the new software, the display shows “Loading files …” with a progress bar. This process can take up to 15 minutes. In this phase, the pump is fully functional and can be remotely controlled via the app again.

However, the operating unit is still installing the contents, some of which are very large and consist of language files for more than 25 languages and various graphics.