iPadOS 12.3 (build 16F5129d) is an official Apple over-the-air update for the iPad 5 (WiFi), released on 2019-04-08T17:04:17Z. The update package is 301.7 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: 705914832f087a37e4c5663e63c823b0b375b417.zip.