iOS 9.9.17.4 (build 21E219) is an official Apple over-the-air update for the iPhone 12 Pro, released on 2024-03-05T18:18:24Z. The update package is 5.79 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: 96521ca8b1ea2b4336948a6c39642a6019600353.zip.