iOS 12.3 (build 16F5155a) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2019-05-07T17:04:12Z. The update package is 475.97 MB. This is a delta (partial) update that requires 12.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f635be05bf8ce7141964ef7e064537dd292298c7.zip.