Editing ISO psp files?

[kissofthehell]

I want to merge 2 games basically the one is the USA and the other is JAP version. The thing i want to merge is the voice files. Because SEGA removed the full voice over on USA/EU version while the JAP has full voice over. Is there way to edit the psp iso game files and then put them back together and again in iso which will work ?

[El Guapo]

Why dont you just play the Japanese version if you want the audio with it?

[Geek]

You can't really "merge" them. The files all have different calls on which files to use. For simplicity play the JAP version as Guap said.

[kissofthehell]

is there some sort of english patch for the jap version because i cant read japanese?

[faustnero]

you can try googling that or something. if you there aren't any result, well then that's for it. if you're really eager, you can do it yourself but it will take a 'ton' amount of time because it will include hexadecimal formatting.