It seems there is some confusion about PS3 Savegame editing. Here is a little Howto Tutorial:
It is only on jailbreak PS3s possible, the popular cobra webman plugin must be installed (and activated) on your PS3, most recent jailbreak PS3 custom firmwares have it preinstalled. I use the famos rebug custom firmware with webman plugin.
http://rebug.me
You need to buy X-Packer 10 (won't work with X-Packer 9) and you need a ftp client. If you are a firefox user, you can use FireFTP https: