I synced my phone with a different computer to download some music from it. My songs were wiped off in order to install through another itunes. When I synced to my own computer my itunes was gone. How do I restore?
iPhone 4, Windows 7
As far as I know, your phone only can sync with 1 computer. When you plugged to other computer, there is warning about all the songs will be deleted to be sync with your new computer.
You can restore it back to your computer, but the songs you sync with different computer will be lost again.
Syncing worries
