iOS 9.9.17.4 (build 21E6219) is an official Apple over-the-air update for the iPhone 12 Pro Max, released on 2024-03-05T18:17:03Z. The update package is 5.76 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: 85716723cef12192fe8462d0c98282b347d3417e.zip.