streetpass mii plaza save editor help.

[Intermations]

so when i was finished editing my save, i copy and replaced my meet.dat. I used JKSM for it, and when i got into SPMP, my stats were still the same! i was looking for a guide to teach me how to use the save editor, but i could never find one that had the same website to yours! does anyone know how to do this? if you know how to do the steps please tell me.

This was my 3rd day using Luma3DS and homebrew and fbi, so yeah, im a noob.
thanks.