When I was downloading the 3.1 software, the phone froze with a picture of the USB hookup and an arrow pointing to the word iTunes and a musical note on top of a CD. It wont move from this picture. The computer is telling me it is has detected an iPhone in recovery mode and then directs me to restore it. What happened and what do I do? Ive tried holding the home button and then turning it off, but it still shows that image. How do I proceed without losing my contacts and everything else?