iOS 8.0.1 fix
1. Download iOS 8 for
http://appldnld.apple.com/iOS8/031-0564 ... store.ipswiPhone 6
or
http://appldnld.apple.com/iOS8/031-0555 ... store.ipswiPhone 6 Plus
2. Option (Mac) or Control (Windows) click on Update.
3. Choose the iOS 8 firmware file you downloaded in step 1.
4. Let iTunes d
*****UPDATE******
ok apple stopped signing 8.0.1 so you'll have to downgrade
backup via iTunes first just to be safe and then use the 8.0 ipsw files (don't forget these are downloaded as zip, rename zip to ipsw)
http://appldnld.apple.com/iOS8/031-0564 ... store.ipsw iPhone 6 iOS 8.0
http://appldnld.apple.com/iOS8/031-0555 ... store.ipsw iPhone 6+ iOS 8.0