Except, I needed to know why you were even considering downgrading, or what your end goal was.
If userland homebrew was all you cared about, I would have presented you with that info as well. Though on stock 11.0, your only option is basically Freakyhax.
Again, I can't help people properly, if they don't explain what it is they want to do. Saying, "I can use menuhax so why can't I use that?", isn't very enough information, for all I know you may be one of the users that just wants userland homebrew, and there are people that just enjoy that and don't want to bother with CFW.