This app will check and upgrade the firmware within the list of thermometers below to the latest available version. Thermapen Blue TempTest Blue RayTemp Blue BlueTherm One LE ThermaQ Blue Updating the Firmware may resolve known connection issues with recent Samsung mobile devices. However a another Android device, that is not experiencing the issue, will be needed in order to perform the update. It is not normally necessary to do this unless you are experiencing issues with your Thermometer