Apple has stopped signing iOS 9.0.2 firmware

Apple has stopped signing iOS 9.0.2 firmware

Apple has stopped signing all versions of iOS 9.0.2 for iPhone, iPad, and iPod touch just over a week after releasing iOS 9.1 which killed Pangu Jailbreak. This means that users won’t be able to downgrade from iOS 9.1 to iOS 9.0.2 and jailbreak your device.

This can be confirmed by visiting ipsw.me, a website that provides real-time signing status for iOS firmware files. Green tick means that Apple is still signing the firmware file, and red warning sign indicates Apple has stopped signing the firmware file.

This is a problem for those who users who are still running iOS 8 or those who wanted to restore their jailbroken device for whatever reason, and then re-jailbreak it. However for rest of the users its not a big problem as with tools like Cydia Impactor, closure of iOS signing window is not that big of a deal anyway. We hope Pangu will add support for iOS 9.1 and upcoming iOS 9.2 to their jailbreak tool soon.

Apple had patched two vulnerabilities in iOS 9.1 which were used by Pangu Team in their jailbreak tool for iOS 9 – iOS 9.0.2 to prevent it from being used to jailbreak iOS 9.1.

This doesn’t come as a surprise as for the last few years, Apple has used this strategy to keep jailbreakers at bay. It not only releases new software updates that fixes vulnerabilities used by the jailbreaks, it also stops signing the older iOS firmware file, which prevents users from downgrading back to the older iOS version that can be jailbroken.

So given the current situation, jailbreakers should be very careful while installing jailbreak tweaks as a bad tweak could easily force you to restore your device, which would mean that you will lose the jailbreak and all the tweaks installed on your device