iOS 9.9.15.4.1 (build 19E6258) is an official Apple over-the-air update for the iPhone 12 Pro Max, released on 2022-03-31T17:14:10Z. The update package is 4.85 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: 0124d581dbc9b6c477adcdefa002d3cfec8c4200.zip.