Download iPadOS 8.1.3 (12B466) 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 8.1.3
Release Date 2015-01-27
Update Date 2024-06-03
Sha1sum
45f4d858720909777130332d270c413ee9ca2da2
Sha256sum
982432754825eeb1602978c97186debe225b1bd07f2ee12bccced53b228bc0a6
md5sum
405b79b3b2f322e68b3d260cefb65148
Size 1.93 GB
FileName
iPad4,3_8.1.3_12B466_Restore.ipsw
Status

Download IPSW (1.93GB) Check device info
Release Notes

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

This release includes bug fixes, increased stability and performance improvements, including:

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

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