My ipad air 2 is still on the previous ios...9.3.4 I have not updated. I have read the comments here and many more other places when I use google. I seem to come across many negatives regarding this update. So my question is will it do any harm to not update? This is my first ipad, so I have little experience on the pros and cons. People seem mostly concerned on losing the swipe to unlock option. I love the way my air 2 works right now and wouldn't want to mess it up!