If someone could answer this I would greatly appreciate it - it is really surprisingly hard to find good information on jailbreaking / sideloading / general iOS modification!Īpple's server doesn't return "yes it's signed" or "no it's not signed". My question is, what safeguard does Apple have that prevents you from simply configuring your wifi to lie to the phone about the status of the IPSW's signing.įor instance, if today I download the IPSW for iOS 14.7.1 and then record the reply given back from Apple when installing it (while it is still signed), what is to say that a year from now I can't just configure my router to play that same response chain back for iTunes when I'm trying to load the IPSW onto the phone, making iTunes think that iOS is still signed? What the post I read said was that basically, IPSW's were only one part of the OS, and the other part (the signing) needed to be obtained from Apple when your iOS device asked for it from an Apple web server. If you'd like to learn how to make the best use of your iPhone, consider signing up for our free Tip of the Day.I was doing some research online about IPSW's and why you can't load up one that is unsigned by apple. If you feel that reverting to the previous iOS version is still the best option for you despite the setbacks mentioned above, follow the instructions below covering how to uninstall an iOS update. Note: All iOS 14 versions and iOS 15.0 have been unsigned by Apple, so you can no longer downgrade your iPhone software to these versions. To quickly check this, go to and select your device and desired software version to see if the iOS is still signed. If the software version is no longer signed, Apple has stopped supporting the iOS version and you cannot downgrade.
Apple Watch users might lose some functionality. If you’ve already installed the latest watchOS on an Apple Watch, you may not be able to fully use your wearable after downgrading your iPhone software.
While you can still use an earlier backup, you will still be losing some data. This is because a later version backup cannot be used after you downgrade to an earlier software version.
You will lose any data from after your latest iOS update.
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