Download iPadOS 9.3.5 (13G36) for iPad 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 iPad3,4
iPadOS Version 9.3.5
Release Date 2016-08-25
Update Date 2016-08-20
Sha1sum
eaf0ee10e0b46617e50ce35d074da64c2571b9b3
Sha256sum
a0627f336454295238705a8b56ba9a118eb48f0a7cf4e4683a90c219cabdfd67
md5sum
c6d919a795c629c61a90d22af97ddba4
Size 1.58 GB
FileName
iPad3,4_9.3.5_13G36_Restore.ipsw
Status

Download IPSW (1.58GB) 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