I was backing up my iPhone 3gs and about to restore to my new iPhone 4s. During the long backup process of my 3gs it got unplugged from my computer and is now stuck in recovery mode with the iTunes logo and USB sign. It did however create a partial backup onto iTunes. I tried to restore my new iPhone 4s from that backup but only about half of my apps and pictures and songs were in the backup. Is there a way to back it up from a previous backup version, like from a file? Or how do I get my old iPhone 3gs out of recovery mode without completely restoring it?