Download iPadOS 9.3.5 (13G36) for iPad mini 3 (Cellular)

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 iPad4,8
iPadOS Version 9.3.5
Release Date 2016-08-25
Update Date 2016-08-20
Sha1sum
840f711a39851eb557f9ff57d572ade1e76c704f
Sha256sum
3a25f1bbdb9faeff06218ec1ffb1e0112a5093f39fce8c461475f8b99f01c05e
md5sum
1238929f0f0c1eed9300e5cba3fcdf93
Size 1.88 GB
FileName
iPad4,8_9.3.5_13G36_Restore.ipsw
Status

Download IPSW (1.88GB) Check device info
Release Notes

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

iOS 9.3.5 provides an important security update for your iPhone or iPad and is recommended for all users.

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

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