iOS 12.3 (build 16F5156a) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2019-05-10T17:09:29Z. The update package is 71.41 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: ddaa665961d46c6daad8119634ec5af6d12b804e.zip.