iOS 9.3 (build 13E5181d) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2016-01-11T22:09:32Z. The update package is 1.35 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 67e8c072c37fb80ee291fb1e45096d45431e3911.zip.