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FIRMWARE DETAILS

iOS 17.1.2

Build: 21B101Nov 30, 2023Delta OTA
Stable

View details

Filename
6a0861411a6130d42eb076b3e89ba5c4677f9818.zip
File size
4.38 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
0cfb8d573f5dc071635460124ca6159f3b9f10cb78d167c3d5358c9ea8d8cc17
SHA-1
5082cd21688ca2b8906f208f6c9ca1bcee4fc10f
Required starting builds
19C56, 19C63
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