Hi, so my sisters 3ds has old outdated version of the firmware, and i haven't really updated my 3ds either in a while -i know it's on 11.11. -so it's been a while since i last updated a 3ds, and i really would like some help plus a refresher on how to update the 3ds from 11.3 to 11.12, any help would be nice. Thanks for reading.