However, do not treat it as a universal cure. Pair it with a healthy practice of regular NAND backups (via GodMode9) and avoid using cheap, unbranded SD cards. In the world of 3DS hacking, an ounce of prevention is worth a pound of Errfix.
Are you seeing a , or just the missing faces? Errfix.3dsx
In many cases, Errfix is a temporary bandage. The permanent fix is to update your file to the latest version from the official Homebrew Launcher release. Newer builds include the errfix patch natively. However, do not treat it as a universal cure
It primarily addresses two common "missing system data" errors caused by emulators lacking official Nintendo system files: Invisible Mii Faces Errfix.3dsx