FIRMWARE DETAILS

iOS 17.6.1

Build: 21G93Aug 7, 2024Delta OTA

Stable

View details

Filename: a88ea2e2af25dd96bad3711777c5a0d4b15e4541.zip
File size: 3.71 GB
File type: Delta OTA
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: 744e7b21ab02c63fb47e300a6286cc8b9caf08cdcc2e07302c1c4cad8fd9eb13
SHA-1: 66220af1b3a8b15e29b0a3787710fd18d68b5675
Required starting builds: 20G75, 20G81
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 12 iPhone13,2

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