iOS 12.0 (build 16A5308e) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-06-19T17:04:52Z. The update package is 545.18 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: 58dd604f620cdff2dc0523debcca5c872d9813f6.zip.