Bruteforce Save Data is the bar-none app for cheaters hoping to inject mods through custom savegames. A lot of the alterations can be done with and without CFW as well, so this tool has wound up becoming useful across all kinds of development circles. Not too much changes in this particular build, but there are a few different hash checking algorithms to make sure your output files are as correct as they can be. If you want to see what modern console cheating is all about, this is one place to start.