iOS 12.4 (build 16G5077a) is an official Apple over-the-air update for the iPhone 5s (Global), released on 2019-07-16T17:39:37Z. The update package is 142.26 MB. This is a delta (partial) update that requires 12.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e8457d76bb7103162084ab885917a597b28ced81.zip.