Ok so i put the code correctly and put it in gecko os 1.9.1 and go to wifi basic brawl then select a character (I chosed jigglypuff) when i start the battle i'm still jigglypuff :/
This is the code i'm using:
WiFi Character Modifier *NON-HOST* [Bully@Wiiplaza]
F6000001 80508100
7C7C1B78 7CBD2B78
14000170 38A0002C
E0000000 80008000
(I'm trying to be gigabowser)