iOS 8.1.3 (build 12B466) is an official Apple over-the-air update for the iPhone 5 (Global), released on 2015-01-27T17:55:06Z. The update package is 148.69 MB. This is a delta (partial) update that requires 8.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c4b4123a734e7d2c9fb3c159a3271ab6d6082d63.zip.