iOS 11.3 (build 15E5216a) is an official Apple over-the-air update for the iPhone 8 Plus (Global), released on 2018-03-16T17:05:15Z. The update package is 66.79 MB. This is a delta (partial) update that requires 11.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f4e5e3401241c6c9612b2592376485b122b5e824.zip.