iOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPhone 8 Plus (Global), released on 2018-03-29T17:11:23Z. The update package is 807.18 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8856d93d4ed4934ca8dbfe296791cfe5ac49e111.zip.