Okay, so I want to install Homebrew and UnassumingVenusaur's Gay Fates hack, but I was an idiot and updated to 11.0-33U. I want to downgrade to 10.7 or lower, but I want to be sure of a few things first: do you need gateway to do it? I plan on downgrading my 2DS, and I want to do everything right the first time around (I kind of have to).