Looking at your post history, it would appear that you have a Galaxy S2. 4.0.4 is about 22 months old as far as android revisions go, but 4.0.4 is likely the latest official software for you device. You would either have to wait (though unlikely) for Samsung to update your device officially to 4.4.X or be willing to flash a stock android type rom like Cyanogenmod to get 4.4.X.
Sorry didn't see what phone u were talking about. I just assumed it was Samsung s2 cause that was the forum I tapped on.