Hi, I'm not sure if this is the right place to ask, but I really need help. I gave my 3DS to a friend, who fixed it up with arm9lh and freeshop. I downloaded and played a lot of games and racked up 50 hours on Pokemon Sun. Everything was going fine until one day I realized that all of my streetpass data, miis, and friends were gone. I decided to ask him what to do, and he said to open Luma and restore the sysNAND file. I did that. Well, as we found out, the backup file he was referring to wasn't on there, so it ended up getting restored to version 2.4.0. I assume this is when he downgraded my system to load cfw on it.
Now all of my games and their save data disappeared, and when I try to update the system, I just get a communication error even though I'm connected to my internet. Now I'm worried that I lost all of my streetpass data AND I lost all of my game save data, and that I might even be banned. I'm not really well versed in any of this stuff; I don't really know how any of it works. If anyone could help me in any way, I would be incredibly grateful. Thanks.