iOS 9.9.11.3 (build 15E216) is an official Apple over-the-air update for the iPhone 6+, released on 2018-03-29T17:12:11Z. The update package is 1.81 GB. This is a delta (partial) update that requires 8.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: dcb147e5f27d59f2d20e91741a4ad2dca980415d.zip.