To put it plainly, it's the storage/memory for the 2/3DS' DS/i mode, though on the new systems it behaves differently...
https://3dbrew.org/wiki/Flash_Filesystem
https://3dbrew.org/wiki/Flash_Filesystem
I had recently had someone delete my TWL flash because they couldn't keep their grubby hands of my stuff, I (stupidly) do not have a backup because I thought people would think twice before using peoples stuff. He doesn't know exactly what he did but he knows he deleted something important. Can someone help me with fixing this issue?
