I Just Don't Know What To Do. My little sister has dropped her brand new Legend of Zelda N3DS system on the concrete which only cracked/broke the bottom LCD. (Touch Screen still works but the screen is REALLY hard to make and image off of.) I was not too worried because I instantly remembered the warranty on it but then I noticed that I had installed Gateway3DS and plus I downgraded the system which has the home-brew channel on it. So what I need to know is how do I wipe the handheld clean so that there is no evidence that the handheld was modified so I can use my warranty.