iOS 9.9.12.5.1 (build 16H22) is an official Apple over-the-air update for the iPhone 5s (GSM), released on 2021-01-11T18:14:46Z. 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: 27a19142ba0c27a746e12f5dbd3488d7c7795902.zip.