iOS 10.2.1 (build 14D27) is an official Apple over-the-air update for the iPhone 5 (GSM), released on 2017-01-23T18:07:57Z. The update package is 261.92 MB. This is a delta (partial) update that requires 10.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: dedd7dc366f8ab25d1dd1fafcd371df11afcf83b.zip.