iOS 10.2.1 (build 14D27) is an official Apple over-the-air update for the iPhone 5c (GSM), released on 2017-01-23T18:08:04Z. The update package is 873.11 MB. This is a delta (partial) update that requires 9.3.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 46ceabe398f92d2dfdf85f0ffa2f996211d4bb8d.zip.