iOS 8.1.1 (build 12B435) is an official Apple over-the-air update for the iPhone 5 (GSM), released on 2014-11-17T18:06:06Z. The update package is 956.2 MB. This is a delta (partial) update that requires 7.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a903b88e3f75c8884d66750b641be82385335b1a.zip.