I know what the problem is , to get on black ops 2 with a jtag you have to sign out then start the game and then sign back in. Once it's worked you better come back and say thank you for this amazing tutorial . ( takes a lot of effort)Because it you don't, I will find you, and I will do strange things. Edit: don't bother downloading the nuketown map because you won't get past that screen anyway, just get a friend to invite you to a game and it will get past that screen

Btw, the whole part about it being hard to do was a joke, but the method does work as I had the same problem

Use a gsc menu. Iron wolf is pretty bad and unstable

as the guy above me said you have to sign out when you load it up so dont even sign in when you turn your console on just load up bo2 and then u can sign in theres also a fixed version out there that doesnt do that

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^link for iron wolf v2 fixed version