Download iPadOS 15.2.1 (19C63) for iPad Air 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 iPad13,1
iPadOS Version 15.2.1
Release Date 2022-01-12
Update Date 2024-06-03
Sha1sum
1976cfed14868e38907efbe6add515731ccf4ece
Sha256sum
c88abb7cbbeedc542c7f112d3161259740e306321556ea042d69f79e606da274
md5sum
9f4ea65be63182bf39d182e3e970418e
Size 5.46 GB
FileName
iPad_Fall_2020_15.2.1_19C63_Restore.ipsw
Status

Download IPSW (5.46GB) Check device info
Release Notes

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

iPadOS 15.2.1 contains bug fixes for your iPad including the following:

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222