Simple homebrew tool to overwrite Switch account avatars.
Avatool relies on shutting down the Switch's account service. This will result in a crash eventually. Once this is done:
- L and R change the target avatar
- Up and Down control menu
- A overwrites targetted avatars
Avatars are 256x256 jpg images. Place them in sdmc:/avatars/ for Avatool to find them. When exporting your avatars, make sure they are not progressive as the switch cannot read them if they are. This results in a blank or white user icon.