Downgrade iTunes from 7.7 to 7.5 OSX
Step One
If you have Windows, uninstall iTunes 7.7 as well as Apple Mobile Device Support and then reboot your computer. Go to your Control Panel and use Add/Remove Programs or Programs and Features(Vista) to do this!
If you have Mac OS X, open Terminal from Applications:Utilities. Enter the following commands into the Terminal window:
defaults write com.apple.iTunes StoreActivationMode -boolean NO
defaults write com.apple.iTunes StoreGeniusMode -boolean NO
killall iTunesHelper
rm -r /Applications/iTunes.app
rm -r /Library/Receipts/iTunesX.pkg
rm ~/Library/Preferences/com.apple.iTunes*
sudo rm -r /System/Library/PrivateFrameworks/MobileDevice.framework
Step Two
Install iTunes 7.5 onto your computer using the download links provided above.

Step Three
Before attempting to launch iTunes 7.5 for the first time you need to delete or rename the iTunes folder.
Windows:
Rename the C:\Documents and Settings\**your user name**\My Documents\My Music\iTunes folder to iTunes Backup.
Mac OS X:
Select the iTunes folder in your Music directory and rename it iTunes Backup. You press the Enter key to rename a file in Mac OS X.
Step Four
Launch iTunes by selecting its icon in the dock.


