You mean creating an emunand and dumping localfriendseed? If you create an emunand it will be a clone from sysnand, meaning the localfriend file will be useless. What you can do is extract the file from your bricked nand with 3ds fat tool
I am playing pokemon sun leaked cia online since yesterday and still not banned. I guess nintendo's criteria to ban people was for playing online earlier and not the leaked cia
I hope the leaked cias arent the problem. Here where I live my internet has a bandwidth limit, so I wouldnt be able to download the game again. It sucks so much