iOS 12.3 (build 16F5129d) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2019-04-08T17:05:19Z. The update package is 322.32 MB. This is a delta (partial) update that requires 12.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f3447a29dfb3c1d64166b9ae26f699e84acd486a.zip.