You probably upgraded to iOS 9.3.1 when it was released to the public a few weeks ago. Although it comes with bug fixes, especially to those plaguing Safari and other applications, there are still some problems, which Apple promises to fix as soon as possible.
Some of the problems that came with the update include the lack of change log on security updates. There is also no tool available to patch vulnerabilities in iOS 9.3.
Unfortunately for those who have upgraded to iOS 9.3.1, you can no longer downgrade to iOS 9.3.
In a recent update, Apple has stopped signing some iOS 9.3 firmware files, which keep users from downgrading. IPSW.me has confirmed that iOS 9.3 for most devices are no longer being signed. The website provides real-time signing status of firmware files from Apple.
The only signing that’s been going on is on the new builds for some of the older devices. This aims to fix the Activation Lock bug. But any attempt to downgrade to iOS 9.3 will only throw up an error.
For jailbreakers, the issue is not a major problem, especially because it was not possible to jailbreak iOS 9.3. But downgrading would come handy when a previous iOS software update can be jailbroken. In the case of iOS 9.1 higher version, for example, downgrading to iOS 9.1 would have been useful, as it is compatible with Pangu jailbreak. The same thing is true if a new version comes with problems that can be resolved through a downgrade.
This move from Apple, however, doesn’t come as a surprise, as the company had been using the same strategy to keep jailbreakers at bay. Not only do they release new software updates, but also stop signing old iOS firmware files.
Given the current situation, jailbreakers are advised to tread carefully when installing tweaks to iOS 9.3.1 or to any version of an operating system for that matter. This is because a bad tweak could mean system reset or restore.
In the case of devices with iOS 9, any system restore now would mean a force upgrade to iOS 9.3.1 instead of iOS 9.3, as it is no longer available. Unfortunately, only jailbreak iOS 9.1 is available, even when hackers claimed to have successfully jailbroken all iOS 9.3 beta versions.
So to the question, should you downgrade to iOS 9.3, the answer is definitely no. Apple made sure this will be the case from here on out.
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