The Pangu jailbreak team was able to successfully find exploits in the iOS 9 operating system and create a jailbreak tool for it. With iOS 9.1, Apple has closed these two exploits.

Apple is crediting Pangu with finding two vulnerabilities in the iOS 9 operating system on their website. Apple has since patched up those vulnerabilities in iOS 9.1, Tech Crunch reports.

Pangu was successfully able to find two valuable vulnerabilities in iOS 9 that allowed them to go deep into the operating system in order to jailbreak it. One vulnerability allowed a malicious application to grant elevated privileges in the operating system. The other vulnerability involved a malicious application executing code to give kernel privileges. 

Jailbreakers knew that Apple was planning on patching these exploits in iOS 9.1. The Pangu jailbreak tool only worked in iOS 9, iOS 9.0.1 or iOS 9.0.2 and not the iOS 9.1 beta. Pangu quickly pushed out the iOS 9 jailbreak tool before the final version of iOS 9.1 was made available, which would have been too late.

If users have already upgraded to iOS 9.1 they will be without a jailbreak tool. Pangu could already be working on an iOS 9.1 jailbreak tool, so these users might not be out of luck.

Just before Apple made iOS 9.1 available to the public Wednesday morning, Pangu updated their iOS 9 jailbreak tool to version 1.1.0. Pangu said version 1.1.0 would have better results and be more stable, but it was still focused on iOS 9 and not iOS 9.1. Pangu has not announced that they are working on an iOS 9.1 jailbreak tool yet.

For users who want to keep their iOS devices in a jailbreak state, they are advised not to upgrade to iOS 9.1 until an official jailbreak tool is released.