iOS 9.9.17.4.1 (build 21E6236) is an official Apple over-the-air update for the iPhone 13 Pro Max, released on 2024-03-21T17:20:22Z. The update package is 5.81 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: 6815b10bdd5e809b393cfe6688f25966975459e8.zip.