My sister's 3ds was downgraded with Gateway, so decrypt9 says that i cannot dump or inject fbi into the health & safety app. It will say app0 not found or fragmented(something along these lines). I've tried to use rxTools to inject fbi too, but it just doesn't work. It is an o3ds on firmware 4.2.0-9U. I don't have Gateway or Cubic Ninja.