Probably easiest to use Bannerbomb and HackMii:
Plenty of tutorials for these online and on YouTube. Not difficult to do if you follow the steps carefully.
HELP!!! I was attempting to use the wad uninstaller, and I've accidentally deleted the Hombrew Channel. I had previously downgraded from 4.0 to 3.2U, so i am running 3.2U now. What do i need to do?!?!?!