Place the errfix.3dsx file in the same directory as your Tomodachi Life game executable.
It is most commonly associated with fixing the loop that can sometimes happen after a failed update, a bad theme installation, or a corrupted title database. When Should You Use Errfix.3dsx? Errfix.3dsx
Sometimes, "system errors" are actually just signs of a dying SD card. Use a tool like H2testw on your PC to ensure your hardware isn't the real culprit. Place the errfix