iOS 9.9.10.3 (build 14E277) is an official Apple over-the-air update for the iPhone 5 (Global), released on 2017-03-27T16:57:40Z. The update package is 1016.04 MB. This is a delta (partial) update that requires 9.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e523e80c990d9d06e46a6e09c3ad3484f83a0fa8.zip.