Do you hate iOS 8? Maybe you’re an iPhone 4s owner who made the mistake of believing Apple when they said that iOS 8 supported your device, or maybe you’re just a luddite who hates change!
Either way, you’re in luck: If you regret your upgrade, you’ve got a rare opportunity to turn the clock back. You can downgrade your device from iOS 8 to iOS 7.1.2, if you act fast.
Generally speaking, Apple doesn’t allow you to downgrade your version of iOS once you upgrade. In order to install a version of iOS on your iPhone, iPad or iPod touch, iTunes first checks to see if Apple is still signing that version for your device. Usually, Apple only signs one version of iOS — the latest one — for every device capable of running it. So if your iPhone can only run iOS 7.1.2, iOS 8 won’t be signed for your device. And if you’re running iOS 8, iOS 7.1.2 will no longer be signed, so you can’t reinstall it.
Right now, though, Apple’s doing something largely unprecedented: signing both iOS 8 and iOS 7.1.2 for devices capable of running both. This means that if you updated to iOS 8, you can downgrade back to iOS 7.1.2 just by installing it from an IPSW package file through iTunes. (For a good overview on how to do this, check out iDownloadBlog’s walk-through.)
If you regret iOS 8 for any reason — for example, you gave up your jailbreak to check iOS 8 out, then regretted your decision — you can still go back. But this won’t last long. Apple will stop signing iOS 7.1.2 soon, possibly even today. If this is what you’re going to do, get going.