how to undo iOS backup script changes / itunes cant take backup error.

STEP - 1. Go to Folder ~/Library/Application Support/MobileSync/

 you would see two folders there as shown below.




DELETE backup folder (Only if you see that as Linked as shown above)


STEP - 2. Rename "Backup2" folder to "Backup" 


Now you can open ur Itunes and backup would normally take place on ur Mac.