I've been using 2.0.7 and it works perfectly. I could not get 3.0 to work at all. Are you trying to use 3.0 because you need infrastructure tethering?
I actually think version 2.0.7 is the one I tried first based upon a post I read. I couldn't get it to work. Maybe I need to try it again to be sure.
The only reason I'm using 3.0 is cause it seems to work for me allowing to connect our devices to the epic. Honestly, I don't even know what infrastructure tethering is. Strangely, I can access the hotspot using encrypted connections today.