Start LpmsControl (Start menu → OpenMAT → LpmsControl)
Connect to sensor
Save a copy of the calibration parameters as a backup just incase LpmsControl fails to auto reload the parameters after firmware upgrade:
Select Upload Firmware in Advanced menu
When prompted click Yes
Select firmware file
Wait for firmware download to finish
After the download has finished, the sensor should reconnect automatically and stream data. Make sure to readjust your parameter settings as they might have been reset to default values after the update.