Download iPadOS 9.2.1 (13D15) for iPad Air (China)

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 iPad4,3
iPadOS Version 9.2.1
Release Date 2016-01-19
Update Date 2016-01-12
Sha1sum
1104ad781af7757e7afa48e59b2bdeaad9948829
Sha256sum
9806d792f2fae936c612d331ff016162838d757109b9db91d2e87d737b83bbc7
md5sum
39eb30770cd1ba3f6a459c5cad39fac6
Size 1.84 GB
FileName
iPad4,3_9.2.1_13D15_Restore.ipsw
Status

Download IPSW (1.84GB) Check device info
Release Notes

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

This update contains security updates and bug fixes including a fix for an issue that could prevent the completion of app installation when using an MDM server.

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

https://support.apple.com/HT201222