How do I force a sensor to look for new firmware via over-the-air update?

To force an update lookup, when the sensor is operating with internet access, press the “reset” button instantaneously (for less than 1 second).   If new firmware is discovered on the cloud, the sensor will download and install this new firmware and reboot.  The full process may take as much as 6 minutes.

See how to schedule a sensor firmware update from the web dashboard