iOS 8.1 has been released by the Apple for public use, which support all the latest iOS devices in particular the Apple flagship devices iPhone 6 and iPhone 6 Plus. People who are waiting for new update can now download iOS 8.1 IPSW files with direct links given below. This iOS 8.1 update is offered via OTA (Over-the-air), but users are reporting issues while updating their devices by facing error “Unable to install update” error read this to fix this issue.
It offers couple of new features along with those features which were announced at WWDC Keynote in June including SMS Relay, NFC based Apply Pay service, restores the Camera roll, HealthKit apps. Here’s the iOS 8.1 features and fixes according to release notes:
How To Fix iOS 8.1 “Unable to install update” Error
Some users experiencing this issue while trying to install iOS 8.1. There are several reasons which cause this issue to occur, and one of them is the low battery of your device on which you try to install iOS 8.1 update. If you are facing the same issue just plug your device with lightning cable to start charging and then try again to update your device.
If you failed to install iOS 8.1 update through OTA, then you can try to install iOS 8.1 using iTunes on your own PC or Mac.