Long story short.. I mindlessly copied a 3ds file from my sd card to my desktop. i removed the same file from the sd card to see since i thought it was digital game data, when i tried to put the file back in i got a prompt saying there wasnt enough space. My 3ds no longer has the games/homebrew/theme/ i cant us my pokemon catridge without the sd card (save data should be on catridge). Im slightly lost here.