FIRMWARE DETAILS

iOS 17.3.1

Build: 21D61Feb 8, 2024Restore IPSW

Stable

View details

Filename: iPhone11,8_17.3.1_21D61_Restore.ipsw
File size: 7.44 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: 9cb65a2db1d72f2d440d1d4f67607c51ad1481cfb44d1c7dec27580024026d95
SHA-1: f70dde09d2502819c605d6da8063fbf88ac93f80
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone XR iPhone11,8IPSW.me public API retrieval · Oct 21, 2026, 7:04 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%3B21D61.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: caa4c3b8f1108221a1cf4826799a13ca

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: 014aad07ab70f5bfbba5e6f4ef1e3a6c