Oh no! Was Microsoft losing money from people modding their consoles? Oh heavens no! Major Nelson steps in and pities your console! In other words, Microsoft is cracking down on consoles that have been modded or hacked and not allowing those consoles to connect to live as they are a “cheating” device.
If you have modded your Xbox 360, better go buy a new one because Microsoft is gonna void your console from connecting to live. You will receive code Z: 8015 – 190D if you connect a modded console to Live. Apparently console modding is “illegal”.