iPhone 4 running iOS 5.1 gets untethered jailbreak
Good new for Iphone users , now someone have jailbreak the Iphone ios5.1 but it was apples own employee pod2g claiming he has been jailbreak the Ios5.1 untethered jailbreak its evident that all Iphone 4s users still have to wait a while for Jailbreak your own devices As of now, it can only do a tethered jailbreak for the iPhone 4, meaning you will have to keep your phone switched on or you will lose it and have to do it all over again. Hopefully, the updated version is released soon. Source