The package manager allows you to open an Xbox 360 Gamesave or Profile to rehash and resign and/or edit.
The package manager is designed to rehash and resign your saves,which you have downloaded as you need to change the id`s on them to be able to use them reason the package manager is needed.Also you can rehash and resign mass files at once rather than one at a time.Also you can explore your profile with it aswell if your requiring a GPD or inserting a GPD.