iOS 11.4.1 (build 15G5072a) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-06-18T17:05:37Z. The update package is 153.52 MB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b9af94be0276d7eae7c8bf7d6983cdf48bf4e1fb.zip.