iOS 12.0 (build 16A5364a) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-08-23T20:08:00Z. The update package is 159.64 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 48e095f2f76b6813539780f8f3202ab53a686f9f.zip.