Download iPadOS 15.3.1 (19D52) for iPad Pro (11-inch) (3rd generation)

You will have to note that you can only restore signed IPSW firmware files using iTunes or 3utools.

❌ This IPSW firmware is not being Signed by Apple

Firmware Identifier iPad13,4
iPadOS Version 15.3.1
Release Date 2022-02-10
Update Date 2024-06-03
Sha1sum
233c790c21d888883adb838720a46fd617ea9248
Sha256sum
9a38b2ff080ef67f4df4a66191cc5864a419686048eba9c0a315fb81e9f32047
md5sum
98a12538bd706da8dd8ae370d8ace371
Size 5.94 GB
FileName
iPad_Pro_Spring_2021_15.3.1_19D52_Restore.ipsw
Status

Download IPSW (5.94GB) Check device info
Release Notes

It should be noted that these are the official release notes for the from Apple

iPadOS 15.3.1 provides important security updates for your iPad and fixes an issue that may cause Braille displays to stop responding.

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222