iOS 9.2.1 (build 13D15) is an official Apple over-the-air update for the iPhone 5 (Global), released on 2016-01-19T17:59:43Z. The update package is 1.17 GB. This is a delta (partial) update that requires 9.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 84dc70599b30c87e8adf7535bef79156ade3fc47.zip.