iOS 9.9.15.6 (build 19G71) is an official Apple over-the-air update for the iPhone 13 Pro Max, released on 2022-07-20T17:21:15Z. The update package is 4.9 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: 87abc6bebf27ffc6ef7d15b4a67fafe182368acf.zip.