iOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2018-03-29T17:13:36Z. The update package is 854.46 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f9a422bc01205a01960d4b8ef7c02345ee0086d0.zip.