iOS 9.9.11.0 (build 15A372) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-09-12T19:09:30Z. The update package is 1.22 GB. This is a delta (partial) update that requires 9.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 479ace2b10d9e82954fc498a1dc8edbf83f1bc34.zip.