I'm purchasing an original 3DS XL that's on system firmware 7.2.0-17U. What I want is a CFW that allows me to download games from Freeshop onto my SD card and bypass region locks. Playing homebrew games and emulators would be nice but they're not important. What's the actual difference between Luma3DS, A9LH, etc? Do I need all of them together or are they different things?