iOS 11.4.1 (build 15G77) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-07-09T17:09:33Z. The update package is 673.54 MB. This is a delta (partial) update that requires 11.2.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ce34b4e82bba7b735717fa19226b5b13e1cd4fd2.zip.