iOS 9.9.15.8 (build 19H6370) is an official Apple over-the-air update for the iPhone 6s, released on 2023-10-25T17:24:18Z. The update package is 3.82 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: 9bdeb9f8b59effb0df5089f263ed11ff2654eb40.zip.