iPhone 7 won't finish installing iOS 11
Something happened the first time I tried to install the iOS overnight, so I had to start over. My iPhone is put into recovery mode and when iTunes asks if I want to update or restore, I choose update. iTunes downloads the update, and my phone begins the installation. The installation looks like it is stuck at 99% because the bar is almost full, but it will never fill. How do I fix this problem without restoring my iPhone?
iPhone 7, iOS 10.3.1