iOS 11.0 (build 15A5341f) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2017-08-07T16:57:36Z. The update package is 283.66 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ba1aea156bd01ffed6b2e4f9fe44406834dbabbf.zip.