FIRMWARE DETAILS

iOS 17.1

Build: 21B80Oct 25, 2023Full OTA

Stable

View details

Filename: b3c2def6852546dde3a29953682b6f98c152a8fb.zip
File size: 6.33 GB
File type: Full OTA
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: 176e9997da5c87a95ded912e6e97ff44fb6593cf307065cae49da2a93aeffd0f
SHA-1: 3959caaefefbd24cdfd6f349cad8ab33b510623a
Required starting builds: Not reported
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%3B21B80.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: 0c4ce2fa2e67994f9d70a827901c0dd4