I accepted the IOS9 upgrade and my iPhone 6 plus is stuck on "slide to upgrade". I cannot do a restore, even a full system restore, because find my iPhone is turned on. How am I supposed to turn it off, when I can't get past the "slide to upgrade" error? Apple needs better quality controls. This problem is all over the internet and the suggestions are to do a restore. What if you can't do the restore because you can't turn off Find My IPhone?
This is frustrating. I'm a long time apple advocate, but this is getting old. This will be my third appointment with a genius (oh and they're booked for two days so no phone for two days) and I've only had this phone for about 6 months! It is not just the older iphones. It's the nearly new ones too. I use this phone for work. I can't keep having issues like this. They need to test their upgrades much better before they release them and make sure they are backwards compatible too.