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FIRMWARE DETAILS

iOS 17.1.2

Build: 21B101Nov 30, 2023Delta OTA
Stable

View details

Filename
e47d53fab48bf1e2a621569309c7bde018867583.zip
File size
3.57 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
34a9f71473ce54d35ae674e44af996c4fb886969d0946c10bc909e4cd6b1a324
SHA-1
1d08bb6678b63e8837e42ecd2bcd54546dc85a73
Required starting builds
20E247, 20E252
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