Few days back, winocm – the p0sixspwn developer, demoed an untethered iOS 7.1 jailbreak on iPhone 4 in a video. Now iH8sn0w, who also worked on p0sixspwn and owns popular jailbreak tools such as Sn0wbreeze and iREB, now confirms that iPhone 4S iOS 7.1 jailbreak has been achieved.