I'm on iOS 8.4.1 and I don't want to update to iOS 9. Apple has pushed a notification on my Settings app, but how do I remove it? I have deleted the iOS installation file on the device itself, but the "1" remains. I've also tried to Reset all settings, but it's still there. Lastly, I've tried restoring the device, but after being hooked up to iTunes, it pops up again. Also tried removing the installation file on my computer. Is there anything, other than updating to iOS 9, that can remove that badge?