What DTH’s and smartapps have you tried? You’re not trying to discover the device the way you would a zigbee or z-wave device are you (by hitting the plus sign)? LAN devices don’t work that way most of the time. You have to add them through whatever smartapp you’re using or manually through the IDE. The page where you found your firmware didn’t have instructions on how to integrate with ST? Then odds are the firmware doesn’t work with ST. There’s a set of firmware I know does because I use it.