iOS 10.2 (build 14C92) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2016-12-12T17:58:03Z. The update package is 308.45 MB. This is a delta (partial) update that requires 10.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c90cb31c0edcf3aa79ae850c48689f895f3e2515.zip.