I have a 6s+ and upgraded to 10.0.2 a week ago. There's a noticeable performance decline, and battery life is terrible I want to switch back to 9.3.5; the problem is that I only have a 9.x backup that's a year old. My most recent backup in iTunes is for 10.0.2. If I do a fresh install of iOS 9.3.5, how can I copy over my texts, contacts, and pictures? I don't mind reinstalling apps. My iTunes and iCloud backups are all 10.0.2, so I can't use those apparently.