iOS 9.9.11.2 (build 15C114) is an official Apple over-the-air update for the iPhone 6, released on 2017-12-02T08:13:39Z. The update package is 1.58 GB. This is a delta (partial) update that requires 8.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6bb29a25d930ea3046c14c13abf930f6d8c97e2a.zip.