iOS 9.9.13.3.1 (build 17D6050) is an official Apple over-the-air update for the iPhone 11 Pro Max, released on 2020-01-28T18:27:17Z. The update package is 3.68 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: c696f991add8ba6bb8a83cbb84e938b420eac12b.zip.