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FIRMWARE DETAILS

iPadOS 17.5.1

Build: 21F90May 20, 2024Restore IPSW
Stable

View details

Filename
iPad_Fall_2020_17.5.1_21F90_Restore.ipsw
File size
7.52 GB
File type
Restore IPSW
Download host
updates.cdn-apple.com
Link availability
Not verified

Source did not report availability

Last link check
Not checked
SHA-256
90d9a72cbf0d03fb83067c25a212ec8f8cc5aba26da581ab7549505863bd6661
SHA-1
9150827c5163d851daa2f865cc14de958c31bc04
Required starting builds
Not reported
Board restrictions
Not reported

Compatible hardware (2)

iPad Air (4th generation) Wi-Fi iPad13,1IPSW.me v4 third-party restore observation (retrieval time) · Oct 19, 2026, 10:59 PM UTC
Unknown
iPad Air (4th generation) Wi-Fi + Cellular iPad13,2IPSW.me v4 third-party restore observation (retrieval time) · Oct 19, 2026, 10:59 PM UTC
Unknown

Signing is specific to the device and file. A signed build does not guarantee a downgrade or successful installation.

Source provenance

IPSW.mehttps://api.ipsw.me/v4/device/iPad13%2C2?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:19 PM UTC
Record fingerprint: 37c0026a23d2c2ccf351b8e5bdba6032

IPSW.mehttps://api.ipsw.me/v4/device/iPad13%2C1?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:19 PM UTC
Record fingerprint: 3623b2344da75c88f9865e70387e99cb