iOS 8.1.3 (build 12B466) is an official Apple over-the-air update for the iPhone 5 (Global), released on 2015-01-27T17:55:05Z. The update package is 754.59 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: a48d455e7e23fedd2a1c831ce95b39a1477f5076.zip.