iOS 12.0.1 (build 16A404) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-10-08T17:10:01Z. The update package is 1.7 GB. This is a delta (partial) update that requires 10.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fb1fb2338b7d57842c4b9b691e8c88c888984a60.zip.