FIRMWARE DETAILS

iOS 17.1 beta 2

Build: 21B5056eOct 3, 2023Delta OTA

Beta

View details

Filename: b9a83d9464fff409a72942aa3651b3df8dcb2a9c.zip
File size: 838.8 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: f23d4c69c65ca0023219fcc6e91ec02b8602d078d8bae2c6d36e85579d860b0d
SHA-1: e8fb8e94d0f1a0ffa13e66a7bfb89f0f61e00990
Required starting builds: 21B5045h
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%3B21B5056e.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: a5e7797b0709d6a60d5270c75026ee0d