FIRMWARE DETAILS

iOS 17.1.2

Build: 21B101Nov 30, 2023Delta OTA

Stable

View details

Filename: 9d23cd0934560607d47b17c980d55bed319b4e71.zip
File size: 1.19 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: 5f75f11f1477495c5a027281c3e96d540b2cc0e5bf113fd2eefbb41a683770be
SHA-1: 3d983d1dea8ffdd50db36c11a61d8d6c7506d3de
Required starting builds: 21A340, 21A351
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 14 Pro iPhone15,2

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%3B21B101.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: 4f30a5cce34598c7be862eafa91e271b