iOS 9.9.15.8 (build 19H370) is an official Apple over-the-air update for the iPhone 6s+, released on 2023-10-25T17:25:57Z. The update package is 3.96 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: 733f88d8c239722edcaece7c195528ec68febd9c.zip.