Do you have 1609 gateway firmware update yet and how is it working for you?

What about the Open NAT and UPnP issues? Unable to use T-Mobile home internet ( NOK 5G21 Gry Gateway) with Xbox gaming. I had to keep my previous ISP and am now paying two monthly bills because I am trying to give T-Mobile a chance. Really frustrating that T-Mobile is selling home internet with this even being an issue. How could the engineers not have been aware of this problem before the service was even marketed and why is a solution taking so long? I've seen comments relating to this going back 6+ months. Is this problem REALLY being worked on? My gateway was delivered with software version -1609 already on it.