sound option is not responding plzzzzz help?

[khurram.dildar]

hello
i have phone 3g iso 4.2 recently updated and now i jb it..but now the problem i am facing it is sound...when i go to setting>sounds it does not open main home screen comes again please helpppppppppppppppppppp.....

 

[JamesMB]

Restore as new, that ought to fix it.