iOS 9.9.12.0 (build 16A6366) is an official Apple over-the-air update for the iPhone 6s, released on 2018-09-12T19:04:12Z. The update package is 2.15 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: 9c824d229bfaf656b0816237ded4bd5bd5e2c2c4.zip.