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 221.03 MB. 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: 838db8f767eac3a5d4c24f73142e37b843e8d524.zip.