iOS 12.0 (build 16A5357b) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-08-15T17:06:57Z. The update package is 283.58 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: e6b28c4a061e5e5bd0b3808213e137934c842326.zip.