iOS 9.9.15.3 (build 19D50) is an official Apple over-the-air update for the iPhone 11 Pro Max, released on 2022-01-26T18:14:50Z. The update package is 5.47 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: e722859745c717eea3ff57e61e07b55855f261ce.zip.