iOS 9.9.10.2.1 (build 14D27) is an official Apple over-the-air update for the iPhone 6, released on 2017-01-23T18:08:30Z. The update package is 1.42 GB. This is a delta (partial) update that requires 8.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: deb7e4799d7a2f7ce590b930f2d51d3644c86799.zip.