iOS 12.0 (build 16A5288q) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-06-05T09:52:28Z. The update package is 1.16 GB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c041e6c5afe695fc48cbb71805c594e8c3761235.zip.