I've done the following a few times,
1) Connect with Wired Ethernet
2) Update to the latest Version
3) Manually Assign the Wireless Details (you can do this with the App or via the Web GUI).

HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs