I did re-install custom firmware after stupidly deleting stuff i shouldn't on FBI (https://gbatemp.net/threads/i-deleted-red-tickets-on-fbi-and-now-i-cant-boot-the-3ds.531776/).
Now I have some of the old installed titles still appearing on FBI, but I can't launch them. I need to reinstall...
I get a black screen with a "prefetch abort - kernel panic" error message.
I was uninstalling stuff on FBI so i could get room for more games, and I uninstalled a bunch of those titles made of only numbers, since I thought those were saved games from previous uninstalled titles.
Now I can't...
Only thing drive me crazy is all these new horror games nowadays is its so dark, all time. I can't even play them. I understand they trying to create spooky but be creative a little, not just darkness with pop out scare scenes.