I think you've done all the right steps, and the ObiWiFi should be working for you at this point. I'm leaning towards the thought of a defective ObiWiFi in your situation, but first...
I'm running SoftwareVersion 3.0.0 (Build: 3184M). So perhaps you could update your 3176M first and see if that helps. Also, (and this may not be recommended by Obihai), you could try plugging your ObiWiFi into a PC to see if the PC will even detect it. Again, I do not know the official advice from Obihai regarding this; so you may want to check with them first. It may be strongly advised against; I do not know. What I do know is that I have plugged my ObiWiFi into my PC and have been able to use it to connect the PC to my wireless network without issue.