Let's find out is it possible to download iOS 9.3.4 jailbreak tool for iPhone or other compatible iDevice. As you know with the release of latest software update, Apple patched a vulnerability used in the Pangu jailbreak for iOS 9.2- 9.3.3 devices, making it incompatible with iOS 9.3.4 . Now, famous Italian hacker Luca Todesco, aka qwertyoruiop, has posted a picture on Twitter showing jailbroken iPhone running on iOS 9.3.4 firmware version.
Posted on 5-th of August the tweet, which says “out here at defcon”, is accompanied by an picture of a jailbroken iPhone running iOS 9.3.4 with Cydia installed on it. This isn’t the first time the hacker has teased a potential jailbreak. Back in June, he demoed a JailbreakMe-like Safari-based iOS 9.3.2 jailbreak which he didn’t intend to launch to the public. The hacker also managed to jailbreak iOS 9.3.3firmware before Pangu jailbreak release, but as the first time he didn't present it to public. As it become a tradition, we also don’t expect Tadesco to release any jailbreak tool for iOS 9.3.4 this time. So currently it is impossible to download iOS 9.3.4 jailbreak tool for iDevices.
At this point Apple company has kept the signing window open for iOS 9.3.3 firmware, so in case you have accidentally upgraded to iOS 9.3.4, you still have the chance to downgrade back to iOS 9.3.3 and easily jailbreak it with Pangu tool. Remember that this can be done as long as the signing window is open for the iOS 9.3.3 firmware.
The fact that Todesco managed to jailbreak iOS 9.3.4 indicates that while this recent update patches a vulnerability used by Pangu to develop the iOS 9.3.3 jailbreak, there are still exploits that could be used for future jailbreaks. So we can expect that it even will be possible to jailbreak the upcoming iOS 10 software release.