If you have a mobile phone with Android operating system: 1) Download the Stream Vision App from the Play Store. 2) Turn on the Thermion XM50. 3) In the Thermion menu, put the Wi-Fi selection on "on". 4) Turn on the cell phone wi-fi. 5) Open Stream Vision and connect with the Thermion (perhaps the password for defoult is 12345678). 6) Touch the first icon at the bottom left where "My devices" is written. 7) Your device appears with the serial number on the right. 8) Touch the rectangle where it says "CHECK FOR UPDATE". Of course, the mobile phone must be simultaneously connected to the Thermion with wi-fi and internet in data connection mode. If the device firmware is already updated to the latest version, the message "is already updated" appears. If not, download the latest version of the Firmware which will automatically be installed in the Thermion XM50. However, I advise you that the Firmware 4.0 that activates the new Image Detail Boost function is only downloadable on all Pulsar XP series.
As for the 640x480 sensor of the XP series, I have not heard any news of a shorter duration with the continuous use of the Image Detail Boost function. I have only observed that the device heats up more and that the battery lasts less. So, just for prudence, I would avoid leaving the device on for a long time with the Image Detail Boost function active.
