iOS 12.3 (build 16F5139e) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2019-04-22T17:09:04Z. The update package is 388.31 MB. This is a delta (partial) update that requires 12.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6e168641afc0c40f6d0e480c4d888bfcb3295f30.zip.