You have some great news for iPhone, iPad, iPod touch uses, it was hopefully demo video about tool of iOS 9 jailbreak, this tool made by iH8sn0w , iH8sn0w is developer of popular jailbreak tools such as P0sixspwn, Sn0wbreeze
This developer just released demonstrate video about the iOS 9 jailbreak for public and if you not need jailbreak you can reboot your devices.
iH8sn0w has also publish some details about the security features in iOS 9, you can follow below
Poking into iOS 9 is fun. A little annoyed at some new things. But very surprised at how similar it is to iOS 8 internally.
Worth noting, iOS 9+ arm64 iDevices now enforce a checksum on __TEXT/DATA.const regions of the kernel through the use of TrustZone. Modifying said sections will cause the device to panic (either at kernel or EL3 will force a reboot if the kernel refused to gracefully panic). Essentially, it’s KPP (Kernel Patch Protection). You can race it though if you want to play with things. Just be quick! ;P
Also, there should technically now be two additional partitions (baseband_data [s1s3] and logs [s1s4]) but didn’t really bother with those as they weren’t critical
you can watch demo video here