Download iPadOS 9.1 (13B143) for iPad Pro 12.9-inch (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 iPad6,8
iPadOS Version 9.1
Release Date 2015-10-21
Update Date 2015-10-16
Sha1sum
5ca4ba62d240b044437463073917f27432370675
Sha256sum
9bcfbbee6c91d49c3239d1381dd2bea404340081a01f4deabb1b04f7be2b0b2e
md5sum
af453d190c9e68e0694efe7db508c24b
Size 1.99 GB
FileName
iPad6,8_9.1_13B143_Restore.ipsw
Status

Download IPSW (1.99GB) 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