I have been using iphone 3 for 3 years and got new iphone 4 (not 4S as don't want to spend too many bucks:s) about 2 weeks ago. The OS coing with the new the iphone 4 was 5.0.1 I as I rember. A new days ago I noticed a notification on the phone saying update is avaible, so I tapped "Ok" and it...