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FIRMWARE DETAILS

iOS 17.1

Build: 21B80Oct 25, 2023Delta OTA
Stable

View details

Filename
dfdb6dc199a35589bb83f05c15bb5bc6f7b14c08.zip
File size
1.34 GB
File type
Delta OTA
Download host
updates.cdn-apple.com
Link availability
Not verified

Source reports active

Last link check
Not checked
SHA-256
9ee258eb630e3dc8a99b731fd88f3db72f5fd01c9bfc93356a89355bb02315a8
SHA-1
0443b9369b927b7731c527a664044b859a2ae782
Required starting builds
21A340, 21A350, 21A351
Board restrictions
Not reported

OTA packages can require an exact starting build and board. A matching hardware identifier alone is not sufficient for installation.

Compatible hardware (1)

Unknown

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

Source provenance

AppleDBhttps://api.appledb.dev/ios/iOS%3B21B80.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: 0c4ce2fa2e67994f9d70a827901c0dd4