Download iPadOS 11.3.1 (15E302) for iPad mini 4 (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 iPad5,1
iPadOS Version 11.3.1
Release Date 2018-04-24
Update Date 2024-06-03
Sha1sum
0882c7dec9c970c1ede1aa43babdff63f0149eb0
Sha256sum
87d433ab082a12693d6e6b7d0243c997ae203d63b3dc3e06c39a1579e21f4858
md5sum
717d170121e0357f5be49ed6edaf460b
Size 2.49 GB
FileName
iPad_64bit_TouchID_11.3.1_15E302_Restore.ipsw
Status

Download IPSW (2.49GB) 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