iOS 12.4 (build 16G5056d) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2019-06-24T17:17:26Z. The update package is 193.41 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: 980b2da98da19f859c8c4e2d61f28ff81fab0c01.zip.