Make sure you have the game closed and not running in the background.
1: Download and open file with winrar or whatever you have.
2: Connect your ipod/iphone to your comp.
3: Open ifunbox (that is what I use).
4: Go to "managing app data" tab once your device is fully connected
5: Under "all my apps" click the button and click the Hollywood U thumbnail.
6: Open the Documents folder and remove everything there.
7: Select and move all files from the character file you downloaded to the Documents folder.
8: Press the refresh button above the game thumbnail a few times.
When you start the game it will probably ask you to "link" or "start a new game". Choose "link" and then choose "local".
If you choose "start new game", your device will say it will download your save connected to the game center. This will also happen is you choose "link" and then "download".
I hope this helps, I'm not good at explaining.