I have 2 old 3ds'. One in the firmware 11.6.0-39E and the other one in 6.1.0-39E (not entirely sure about this one. Will edit later if wrong.) I have no idea how to install cfw on neither one, homebrew should do the trick. Which one has a FREE way of doing this. If neither one has a reliable free way of getting homebrew on them, then how do I down/upgrade to 11.3 to get soundhack working?