iOS 9.9.12.1.4 (build 16D6057) is an official Apple over-the-air update for the iPhone 6, released on 2019-02-07T18:06:07Z. The update package is 2.15 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: baa2ab32b24f7a50f4e78bf6945ec90bc0dfe8cd.zip.