iOS 8.1.3 (build 12B466) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2015-01-27T17:55:06Z. The update package is 293.66 MB. This is a delta (partial) update that requires 8.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 29f8369ce6e30dbb39730232e52a6167da11a0d7.zip.