iOS 12.1.3 (build 16D5039a) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2019-01-10T18:09:15Z. The update package is 38.34 MB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 15afc801423b4db59d462c4bfa89f620964a2cfc.zip.