I've never messed with this kind of thing, so I don't know, but how do gamesaves work when you hack your 3DS? If you have a bunch of saves from both retail and digital games, are they saved on your sd card and will still be there when you install cfw, or do you need to back them all up and convert them? I know someone who has hundreds of hours put into MH4U and wants to hack his 3DS, but doesn't want to lose all his work.