iPadOS 15.7 (build 19H12) is an official Apple over-the-air update for the iPad Pro 4 (12.9-inch, WiFi), released on 2022-10-24T17:40:15Z. The update package is 2.65 GB. This is a delta (partial) update that requires 14.8 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b103b399f1f2e343be032178fe37a6473df73fad.zip.