Thanks for replying.
Im having problems with the save (64KB), I guess its because the editing. I cant reduce it to 32KB. This is the save I try to use:
http://www.gamefaqs.com/gba/914982-metroid-zero-mission/saves (EUROPE SAVES)
I'll explain my steps: The save I download its a 64KB Gameshark Save (MetroidZero.SPS) >> I open it on VisualBoyAdvance, and save it to "MetroidZero.SAV" >> Then, I change the name from "MetroidZero.SAV" to "sysgbavc.SAV". The save its still on 64 KB >> Try to inject the save, but its impossible. Im sure its because its 64KB >> Later I try to edit the file with HxD but I cant reduce it to 32KB.
I put here the dump.SAV and the MetroidZero.SAV, so you can see it.
Cheers!