iOS 9.9.11.3.1 (build 15E302) is an official Apple over-the-air update for the iPhone 6+, released on 2018-04-24T17:10:12Z. The update package is 1.59 GB. This is a delta (partial) update that requires 9.3.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3790294ab3cb56f1570680243c6b8b4787b1e31e.zip.