iOS 9.9.10.0 (build 14A5322e) is an official Apple over-the-air update for the iPhone 6s, released on 2016-08-01T16:45:19Z. The update package is 1.7 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: d0afc944bf612e709d8d65b1994e94e160f45ea8.zip.