— Download the latest version of iTunes 10.7 — This will add iOS 6 compatibility to your software Back up your photos and important files. Even if you use iCloud, consider doing a full backup in iTunes, just in case. If you don’t already have a copy of your contacts and calendars on your Mac or PC, go ahead and back those up too. Find your power. Apple won’t let you update your device if you don’t have a minimum amount of power. The updates are fairly large, at over 500MB per device — so go ahead and plug into some power before starting the update.