FIRMWARE DETAILS

iOS 17.1.2

Build: 21B101Nov 30, 2023Delta OTA

Stable

View details

Filename: 73ec4f57f2a4860d25881228065bd35aefd4bc2d.zip
File size: 3.13 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: 94eac5fa7c4f91d9b5040a1f73d603def527479197df41a876d908e8e70989ca
SHA-1: 6817c55f990cbe0894b880d2ace3f81a09944b44
Required starting builds: 20H115
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)

iPhone 12 iPhone13,2

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