that code has been out of use for many months. there is only one right now that allows you to change the order of you 'my playlist'.
I think it is still there, haven't tried it in a long time. that code is 'iamaedgecutter' as a keyword search, at the no results screen physically press menu and info on the boz at the same time.
Like I said, it doesn't do much and Im not sure if it is still there.