iOS 9.9.12.5.3 (build 16H6041) is an official Apple over-the-air update for the iPhone 6, released on 2021-05-03T17:13:13Z. The update package is 2.13 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: 969b3759b3bd857ad52b143956cb1ecf4654f770.zip.