You've already asked about that here:
viewtopic.php?f=72&t=108770&p=1993083#p1993083There's no reason to create another topic to ask the exact same question. The answer hasn't magically changed in the last six months, and won't magically change. We can't edit art files on consoles.
We don't need to see this question again. The situation has been explained to you, you've received the answer; maybe not the one you wanted to hear, but the answer nevertheless. Please take that on board.