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FIRMWARE DETAILS

iOS 17.1.2

Build: 21B101Nov 30, 2023Delta OTA
Stable

View details

Filename
03030f0b0621e97010556a7c1189125b5eef1c53.zip
File size
3.96 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
68312104b0c640cf91a8e2466ad246388dcea5d488c7cbb7265e9106ad41edb2
SHA-1
333ec81fc59d99568c4a019c9708dd9be9552d1c
Required starting builds
20B101, 20B110, 20B82
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%3B21B101.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: 4f30a5cce34598c7be862eafa91e271b