Zephyr For iPhone Updated To v1.1, Adds New Vertical Swipe Gesture To Close Apps And More [VIDEO]Paul Morris·January 28, 2012If you take the time to sit back and draw up a list of the best, most functional tweaks which exist for jailbroken iOS device, then chances are that the list would contain a number of releases created by developer Grant Paul, a.k.a. chpwn.