iOS 9.9.15.3.1 (build 19D6052) is an official Apple over-the-air update for the iPhone 12 Pro Max, released on 2022-02-10T18:14:17Z. The update package is 4.82 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: e14d4eba4294e2be81de65542fc0f68b88df166f.zip.