iOS 12.3 (build 16F5155a) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2019-05-07T17:04:14Z. The update package is 486.25 MB. This is a delta (partial) update that requires 12.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 136fa0a914f4a57cebaafd5a754097d64f8c4c0a.zip.