I think the Enternet download section has to be updated. I am not sure if 1.40 and 1.41 is available for download anymore. I can only find version 1.5 of the Enternet 300 on their website.
Also for tier 1 tech support. To get through the maze of automated messaged and to get a live human is: 1-800-638-4357, option 2,3,3,1,1,8 or 1-800-638-4357, option 2,3,3,1,2,8 , unless this has changed again.