FIRMWARE DETAILS

iOS 17.1.1

Build: 21B91Nov 8, 2023Restore IPSW

Stable

View details

Filename: iPhone12,8_17.1.1_21B91_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: 828e46146401c150ae7b28c9036cc6890f344debb54d4c68206bf9f0b9bc2d39
SHA-1: 895e9e313d338d07fdffb000bfea16ccd8615b30
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone SE (2nd generation) iPhone12,8IPSW.me public API retrieval · Oct 22, 2026, 2:36 AM 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/iPhone12%2C8?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: 0c1bca23bd782558ba9ad7eb03460f3f

AppleDBhttps://api.appledb.dev/ios/iOS%3B21B91.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: 920b0a70bb6d0ccadee92018f5db3f40