Alright! I'm here to say that YES you can use the go.gatway-3ds.com exploit to run the Gateway 3DS 3.0 ULTRA launcher! Boot Gateway Mode does NOT work due to no red card inserted... Most other features work however. NOTE: DOING A DOWNGRADE WITHOUT GW RED CARD IS DANGEROUS! I DON'T RECOMMEND IT!!! I AM NOT RESPONSIBLE IF YOU BRICK YOUR 3DS!!! YOU HAVE BEEN WARNED! If it works flawlessly, let me know. This is kind of experemental, so DO AT YOUR OWN RISK!!! That's all I have to report! UPDATE: You can't run custom launcher.dat files.