iOS 9.3 (build 13E5214d) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2016-02-22T17:47:39Z. The update package is 133.38 MB. This is a delta (partial) update that requires 9.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5384061c1de8047ee2243c77e40bd4f0e9ea5b80.zip.