What system menu you on?
how do update my wii that is already hacked with the twighlight hack. i want to play new games like mario galaxy 2 and so forth but my wii need's to be upgrade how can i do this.
Either follow this guide or follow one of the softmod guides in my signature that matches your wii. Don't update your System Menu just to play newer games. Games are IOS dependent not System Menu dependent.