iOS 9.2.1 (build 13D15) is an official Apple over-the-air update for the iPhone 5 (GSM), released on 2016-01-19T17:59:42Z. The update package is 27.37 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: 829ae8be0fe68904873179f5f303df62f83e741a.zip.