iOS 9.9.11.3 (build 15E5167f) is an official Apple over-the-air update for the iPhone 6, released on 2018-01-24T18:06:51Z. The update package is 1.84 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 707c576a4903a668579dc2b0d975a0bf13bdcb5b.zip.