Download iPadOS 9.0.1 (13A404) for iPad Air (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 iPad4,1
iPadOS Version 9.0.1
Release Date 2015-09-23
Update Date 2015-09-19
Sha1sum
b8b5c14a9045e983a887b313fee59d9544190cae
Sha256sum
dff228f576ede985bc1661f2ccd7b4bb796e212acfd36268811f2c1c75aed332
md5sum
7f7a3edd5c666c7bc616ac1a0ee6533f
Size 1.83 GB
FileName
iPad4,1_9.0.1_13A404_Restore.ipsw
Status

Download IPSW (1.83GB) Check device info
Release Notes

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

This update contains bug fixes including:

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

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