iOS 9.9.17.2.1 (build 21C66) is an official Apple over-the-air update for the iPhone 14 Pro, released on 2023-12-19T18:58:08Z. The update package is 5.84 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: 86d048057007f3b304656a452d5e2cd7ea2871a3.zip.