iOS 9.9.15.2.1 (build 19C6063) is an official Apple over-the-air update for the iPhone 6s+, released on 2022-01-12T18:07:08Z. The update package is 4.05 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: f061a27a55ca154403be71fbda50ce8a645b831e.zip.