Thermal Array Firmware update page:

Although we do not recommend opening up your Thermal Array, we have
provided some updates to the software installed.  Just remove the 2 bottom
screws on top of your array and loosen up the 2 top screws so you can access
the usb port inside.  This usb is to only update the firmware. You must have
the proper cable to install this software, the cable looks like this:
Make sure your array is shut off during the
upgrade process.  The usb provides power
so no need in turning on.

Windows Software to install on your device XLoader Download.
Must have windows 7 or above to run the software.
Extract the software, once downloaded, the software does not require
installation. Once you extract double click on the folder and find the .exe file.  
Here is an example of the settings:
                             *First select where the .hex file is stored
                             *Make sure you select Duemilanove/Nano(ATmega328)
                             *Your com port may be different, when detected
                             *Make sure the Baud Rate is 57600, this works best
                             Then select Upload, you should get the bytes uploaded if  
                             done properly, this means your upgraded, have fun!!!

Factory Installed Version as of June 15th, 2019

V1.4.3.Hex As of June 15th 2019, New Shipments will have this release
      installed.  This release fixes some major issues we came across.  Fixed
      the issue when in some instances the unit would baseline, and then freeze
      when the environment would become 2 hot.

       We also fixed the color scheme to match environmental data and to be
       more realistic.

V1.4.3.Hex Halloween Edition Updated June 15th, 2019
       This version will be the only update to the Halloween Edition.  Color
       Scheme has been updated and now keeps track of Hot/Cold Spots
       even if battery dies.

V1.3.3.Hex As of June 1st 2019, New shipments will have this release installed.
     Added New Feature - Now the Thermal Array will keep track of hot and
      cold spot detections.  If battery dies it will also store the last known
 It will only store the very last, so beware, if the
     investigation the battery dies, we recommend charging unit so you have
     no issues retrieving the data from the unit.  Also holding the audio button
     4 seconds will display the data as long as the power is on, once the power
     is turned off, the unit has erased the data so write or take a photo of the
     screen is recommended for storing.

V1.3.2.Hex New Shipments already have the latest software installed  this was
released April 6, 2019.
    Fixed the detection screen to stop double background
    Added New Feature the PS Mode (Powersaver) to increase battery life 2x
    Fixed freezes when display is in full brightness mode.

V1_20.Hex  (Currently Not Available for Download)
Current Known issues
were working on: Battery Gauge not accurate, Incorrect percentage