iOS 9.9.12.1.1 (build 16C6050) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2018-12-05T18:06:43Z. The update package is 2.11 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: dd7bdc8c8e70c851ad134fa14bc3675b6be468ae.zip.