iOS 11.3 (build 15E5178f) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2018-02-06T18:21:28Z. The update package is 367.47 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: 70554416cbd30ac69de0b1c2c722f37587347e63.zip.