iOS 9.3 (build 13E5200d) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2016-02-08T17:48:27Z. The update package is 115.56 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: 0f910debd40399b70627770e45d2c048e66138bd.zip.