FIRMWARE DETAILS

iOS 17.1.2

Build: 21B101Nov 30, 2023Restore IPSW

Stable

View details

Filename: iPhone12,8_17.1.2_21B101_Restore.ipsw
File size: 7.29 GB
File type: Restore IPSW
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: 9623d61ee4cc38af320b94f7d3e1927a4076cc3d22afe87ea5d49cc030272468
SHA-1: 4927f7720de09a3fbd8236451dcc5fc15eb23302
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone SE (2nd generation) iPhone12,8IPSW.me public API retrieval · Oct 20, 2026, 7:50 PM UTC

Unsigned

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

IPSW.mehttps://api.ipsw.me/v4/device/iPhone12%2C8?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: ec9d234b8450e6026f9cf37ef8a7a0f4