nantheorc

Hey all im a noob to the modded xbox, so any help would appreciated. im playing black ops 2 on link and noticed that my NAT is strict. i have forwared ports 7031/7032 and enabled upnp. i get a pass on all the tests in f3 when i run it. Have tried a couple of tricks from utube and none have worked. have also reset router . my router is a Huawei hg630b and i have a fibre connection and get a 30 MB/per sec connection to speedtest.net any ideas would be awsome . thxs nathan