Download iPadOS 11.3.1 (15E302) for iPad Pro 12.9-inch (WiFi)

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 iPad6,7
iPadOS Version 11.3.1
Release Date 2018-04-24
Update Date 2024-06-03
Sha1sum
a58524a05fe3f58e363437167f7fbea33175eb3f
Sha256sum
a7f68a1c0dc570492301d44706eeeec1fd1317aa07ecd8f46bbfeaec47ca192f
md5sum
0cee91cf0488b246f01287b2ad7439e7
Size 2.46 GB
FileName
iPadPro_12.9_11.3.1_15E302_Restore.ipsw
Status

Download IPSW (2.46GB) Check device info
Release Notes

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

iOS 11.3.1 improves the security of your iPhone or iPad and addresses an issue where touch input was unresponsive on some iPhone 8 devices because they were serviced with non-genuine replacement displays.

Note: Non-genuine replacement displays may have compromised visual quality and may fail to work correctly. Apple-certified screen repairs are performed by trusted experts who use genuine Apple parts. See support.apple.com for more information.

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

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