iOS 11.4.1 (build 15G5054c) is an official Apple over-the-air update for the iPhone 6+, released on 2018-05-30T17:05:14Z. The update package is 223.12 MB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b2a5ef569f87132af905b7438fb63e83661b35a2.zip.