Apple’s No Longer Signing iOS 17.2.1 Leaving iOS 17.3 The Only Option
If you’re an iPhone owner you are no longer able to downgrade to iOS 17.2.1 or install that update if you’re still using an older model, it’s been reported.
Apple yesterday stopped signing the iOS 17.2.1 software which means that it can no longer be installed by anyone who wants to. The result of that is that Apple now only offers iOS 17.3 to the public while iOS 17.4 is a future update that is currently being tested by registered developers as well as those who are on the public beta program.
Apple often stops signing iOS releases, preventing people from downloading the update and installing it on their devices. There are a couple of reasons for that including preventing people from installing older and less secure versions of iOS.
That ensures that bad actors cannot install non-secure iOS updates in an attempt to jailbreak a device to gain access to information on it.
Another reason that Apple would want to prevent downgrading to older software updates is to ensure that users have the latest APIs and features available to them. That also allows developers to create apps using the latest APIs and features while being confident that those who use their apps have the correct software versions installed that support them.
Apple’s iOS 17.4 update is currently in development and is expected to be released between now and March 6.