Download iPadOS 11.3.1 (15E302) for iPad mini 2 (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 iPad4,4
iPadOS Version 11.3.1
Release Date 2018-04-24
Update Date 2024-06-03
Sha1sum
a883eb5343947d70df7b68f7fa7ca76649710114
Sha256sum
03e3fe4e08c7a9bde54d57e22930009fa4936759a6aebedb1098fe9be8f73007
md5sum
d57dc350b8c154a1716a85e7d455d3b8
Size 2.40 GB
FileName
iPad_64bit_11.3.1_15E302_Restore.ipsw
Status

Download IPSW (2.40GB) 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