iOS 12.1.3 (build 16D5039a) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2019-01-10T18:09:15Z. The update package is 278.47 MB. This is a delta (partial) update that requires 12.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 55e5057234a346c5304f741d9bef1ac0ff9fbe14.zip.