Download iPadOS 9.1 (13B143) 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 9.1
Release Date 2015-10-21
Update Date 2015-10-16
Sha1sum
9e629ac9ef9fdef630d92782afca2231fce209a9
Sha256sum
66aa8443bd6cd765d999207835aceac62b74c9b54f12c47f264b6a65aeeeb2e5
md5sum
06f9c8bd5e0475acc92d4070c17176a9
Size 1.55 GB
FileName
iPad3,4_9.1_13B143_Restore.ipsw
Status

Download IPSW (1.55GB) Check device info
Release Notes

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

This release includes new features, improvements and bug fixes, including:

For information on the security content of this update, please visit this website:

http://support.apple.com/kb/HT1222