Ok, what you have to do is, First load the hacked gamesave (someone else's) and copy it on xploder, then move it on the pc folder, then copy your gamesave, and put it on the USB Flash drive folder, and then take the hacked gamesave from xploder pc folder and copy it to the USB Folder, it will ask you to overwrite the gamesave, click yes, and just copy this gamesave on your ps3, there you go, no errors no nothing