iOS 9.9.12.1.1 (build 16C5043b) is an official Apple over-the-air update for the iPhone 6s+, released on 2018-11-07T21:09:09Z. The update package is 2.29 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: 494935dd6a78ebc9ea0ad664cb4e9b93a1d4f78e.zip.