Here is what the 'about' screen looks like on the device:
Displays basic properties of the device.
WiMAX MAC Address:
LAN MAC Address:
Service Provider ID:
Device Bootstrap Version:
Data Provisioning Version:
By the way, firebug is an amazingly fantastic tool. I was able to chop that out of the DOM tree for the web page with a couple of clicks.
nmap claims that it's running MontaVista embedded Linux.