>>29549064I know Anon already confirmed that it just boots to Pokemon XY, but the contents of the RomFS COULD be Pokemon X and Y and there's no reason why the code itself can't be replaced with brick code.
Game binaries are stored in the game's ExeFS, it'd be trivial to replace the binary with a homebrew bricker.
>>29549145NAND backups can't protect you from MCU bricks.
Yellows8 already pointed out and demonstrated that it's possible for even ordinary 3DS homebrew to fully and irreversibly brick a console by sending a bad LED pattern to it.
tl;dr: Everyone's fucked