iOS 11.0.3 (build 15A432) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-10-11T17:06:58Z. The update package is 1.02 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f378f54ec9932d44a0908bdf84be0b7bcc7cc033.zip.