How to reload app preferences and documents on iPhone?

So I updated my iphone to new iOS and then my backup become corrupted.

I was then able to get ALL the information out of the backup unto my computer.

I now have for each app its corresponding Library and Documents. These contain additional folders that the apps use and the Preferences folder, which contains the .plist files.

I would like to put all this information back on my iPhone. But how?

Is there a program for this? Can this be done through iTunes?

I am quite desperate, as I would love to know how to get this done.