Apple Has Stopped Signing iOS 9.3.4 – You Can No Longer Downgrade iOS 9.3.5
Apple has finally stopped signing iOS 9.3.4 firmware which means users can no longer downgrade iOS 9.3.5.
Apple Really Wants You to Stay on iOS 9.3.5 as it Patches an Extremely Critical Flaw in iOS
Apple released iOS 9.3.5 update out of the blue with a very critical security fix. Interestingly, that security flaw was so bad, it somewhat puzzled us how it went unnoticed for such a long time. Now though, Apple is taking things up a notch by seizing to sign iOS 9.3.4, which means once you have upgraded to iOS 9.3.5, you can no longer go back to 9.3.4.
Quite frankly, that is a good thing, and we'll tell you why.
First and foremost, there is absolutely no reason for anyone to have iOS 9.3.4 installed on their device. Especially given the fact that there is no jailbreak for the aforementioned firmware, giving you one less reason to worry about before upgrading to iOS 9.3.5. Secondly, iOS 9.3.5 patches a flaw that can allow an ill-intentioned individual to snoop on pretty much everything that's lying in your device. Your phone call records, your photos, messages, you name it. So, with those two things combined, you are left with no reason to stick to iOS 9.3.4, hence upgrading is the best route to take.
Also, iOS 10 is all set to be released on the 13th of September as well, and it's also packing the new security fixes that come as part of iOS 9.3.5. So, instead of waiting that long, we suggest you make the bold move, head over to Settings > General > Software Update and download what's available for your device. And once you've tapped that 'Download and Install' button, make sure you give yourself a good pat on the back.
At this current point in time Apple is signing iOS 10 GM and iOS 9.3.5, which means you can downgrade from the latter to the former in a heartbeat. Doing so makes sense as well since older devices such as the iPhone 5, iPad mini 2 etc. might not fare well in terms of performance. Besides, both feature the same security fixes hence there's absolutely no harm in staying a step behind for the time being.
Apple will definitely release updates to iOS 10 that will make it even more snappier than it is today. Till that happens, you have a solid option of sitting on top of iOS 9.3.5.