: You can typically find errfix.3dsx or errfix.3ds on community forums like r/tomodachilife or specialized emulation resource sites.

: Websites like GBATelemetry or subreddits (e.g., r/3DSHomebrew) are excellent resources for troubleshooting.

If the Mii heads are still broken, you may also need to install the Mii Maker .cia file on your emulator or console. To make sure this works for you, let me know: Are you using Citra on PC/Android or a real 3DS ?

While there are other methods to fix Mii errors—such as dumping system firmware from a modded 3DS— errfix.3dsx is widely favored by the community for several reasons: