K. I know you're probably in a hurry for some reason, but calm down
Doing such "dangerous" modification can go wrong.
Here are the steps
0) ALWAYS BACKUP YOUR SAVES FIRST
1) Extract your 1131 (EU) or 1132 (US) save with SaveDataFiler
2) Copy the content of your Filer SD folde folder to your computer
3) You'll have 6 files
so far this is what you achieved
4) The files starting with _ are "backups" and you don't need to modify them
5) The 3 remaining files are your save slots, being 0 your first slot and so on
6) Open the file corresponding to the slot you want to modify
7) edit as you like it and save
8) Re-import using DaveDataFiles
Voilá!
Cheers!
EDIT: 'd ??
this needs to be on the front. thanks!