Ok, So I boot in to Homebrew Launcher and select SafeA9LHInstaller, but I only get a black screen. Why would this be, I can't seem to find any answers.
There are many different ways you can spoof a9lh to act just like a regular 3ds, there is little to no reason to uninstall it. If you're running into some kind of twl error or you messed something up, uninstalling a9lh is not going to help.