iOS 9.2.1 jailbreak has been released by hacker named “Luca Todesco” it is a browser based jailbreak, so you won’t need any mac or windows based pc for jailbreaking you ios device running ios 9.2.1.follow below provided instructions to jailbreak your ios device!
Jailbreak iOS Devices Running v9.2.1
Method for Jailbreaking iOS Devices Running v9.2.1 ?
First tap Safari browser on your iOS Device (iPhone , iPod , iPad).
Go to ios9cydia.com. for downloading cydia icon/app on your ios device.
On your iOS device , at the bottom of the screen tap the Up “arrow”. On iPad you will find the UP arrow at the top of the screen.
Tap on “Add to Home Screen” botton (as shown in the image below)
All done cydia app “icon” will be added to your home screen.
rename cydia app icon to “Cydia” if its not already that. 😉