FIRMWARE DETAILS

iOS 17.6.1

Build: 21G93Aug 7, 2024Delta OTA

Stable

View details

Filename: fd8d93d6f3cb0491cdcba016d605d70eb0f50672.zip
File size: 997.6 MB
File type: Delta OTA
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: 4434f45580b5e52d7fbc547b3b1995c0721812adb34f0d6003d950d3ab977eaa
SHA-1: 7381b3b60f296a72a79983933d7fc6f1df92bdfe
Required starting builds: 21F101, 21F79, 21F90
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 15 iPhone15,4

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%3B21G93.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: 8a28e6d5071ff14eae9c5468f13f3b57