Okay, so I have an old 3dsxl running 7.2 on it, I just bought a second GW card for my girlfriend so she can use it for that. Browserhax is a little annoying requiring the internet everytime you need to use it, and I'd prefer her to have something easier and a little less risky than HAVING to go online. I know I can upgrade to 9.2 and use menuhax, or I could downgrade to 4.x and use the ds exploit. Is one better than the other? My only concern is she has a couple 3ds retail carts and has some saves on them she does not want to lose (mainly pokemon). If I go the downgrade route, will that cart that was played on her 7.2 retail, no longer work or be loadable on 4.x or through GW/classic mode without getting a corrupt save? If I have to go the upgrade route to keep current save compatability, what is the best guide to follow for this?