iOS 9.9.11.2.6 (build 15D100) is an official Apple over-the-air update for the iPhone 6, released on 2018-02-19T21:14:08Z. The update package is 1.54 GB. This is a delta (partial) update that requires 8.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9b7ed52dea21656221d4989992d728ff573be16c.zip.