[WIP] Complete Custom Firmware Guide

First you'll need to know whether or not your 3ds is capable of running custom firmware, we will call this CFW from now on

Step 1
figure out what hardware you have, old or new 3ds, this is pretty easy; if you have an old 3ds your game card slot will be in the back and if you have a new 3ds it will be in the front, old 3ds will be referred...