At the bottom of the HTML Configuration Web age you will see the version of HTLM software loaded on the HOTLINK.
The current version is Web_v18.104.22.168-OH and be downloaded HERE
To update your HOTLINK - first download and UNZIP the file from the link above. It should unzip to a .bin file.
Connect your computer to the HOTLINK and then type the following into the browser or just click on this link:
You will see "Upgrade firmware" and "Upgrade customized webpage" options appear in the browser.
Under "Upgrade customized webpage" select "Choose File" and navigate to the .bin file that you downloaded on your computer.