FIRMWARE DETAILS

iOS 17.1.2

Build: 21B101Nov 30, 2023Restore IPSW

Stable

View details

Filename: iPhone11,8_17.1.2_21B101_Restore.ipsw
File size: 7.43 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: bdf1786d42b0204aa7b6a1be26a0e8491d7a44f80c60a1f7c5a147777c784dbc
SHA-1: b78871ebccb8ec21f3a2346e136d6029bc1ad59c
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone XR iPhone11,8IPSW.me public API retrieval · Oct 22, 2026, 12:49 PM UTC

Unsigned

Signing is specific to the device and file. A signed build does not guarantee a downgrade or successful installation.

Source provenance

IPSW.mehttps://api.ipsw.me/v4/device/iPhone11%2C8?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 10:59 PM UTC
Record fingerprint: e867addaa074e635b6d2f86bebcb266a

AppleDBhttps://api.appledb.dev/ios/iOS%3B21B101.json ↗

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