iOS 9.9.12.4.1 (build 16G102) is an official Apple over-the-air update for the iPhone 6s, released on 2019-08-26T17:20:52Z. The update package is 2.2 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: 487d797e90b1d176302222dde7cb583fc96c7568.zip.