This tools was made to work with a 'CFL_DB.dat' file, which can be dumped using JKSM (Shared ExtData > F000000B > Export) and restored with the same tool (Shared ExtData > F000000B > Import), alternatively you can use extdata_dump #Mii maker 3ds rom download update# Miis are not saved in real-time, to keep the changes you've made you need to press the 'Save changes made to Mii' before selecting another one, and after you've finished editing everything you need to press either 'Save CFL_DB.dat as.' or 'Save and overwrite.'. Miis are know saved in real-time, the only thing you need to do is save the CFL_DB.dat file to keep any change made. I (personally) think the GUI is intuitive enough and the options are self-explanatory, but any question feel free to ask. Set its specialness (keep in mind that a Mii can't be special and have 'sharing' on at the same time as it will crash Mii Maker.
