Hi, i'm in need of help i'm real confused. i'v been modding my phone ect flash menu's and all else, i really want this blue battery icon for my phone which is in a vkp file

W580i R6BC002 Iphone Battery patch - Top Sony Forums

i open se tool and put it in misk and click flash then my phone goes dead, i can revive my phone so it is working again, but i am just a little bit confused on why it isnt working. anyone know what i am doing wrong.

thanks for any replys