I'm getting an iPhone 5 with iOS6 6.0 installed. Do I just do a back up from my restoration iPhone version 6.1.6 off my 3GS and/or I think I also have a restoral back up from my iPhone 4s that is also 6.1.6? Is there a way to upgrade the IOS6 6.0 to 6.1.6 from Apple? Also i notice my iPad is running 6.1.3, should I try to upgrade it with an iPhone back up (can I do that?) to 6.1.6?