FIRMWARE DETAILS

iOS 26.1 beta 4

Build: 23B5073aOct 20, 2025Restore IPSW

Beta

View details

Filename: iPhone17,4_26.1_23B5073a_Restore.ipsw
File size: 10.75 GB
File type: Restore IPSW
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: fed9b989b52971698fd5b98fe92ce51394328684e8c9116423425541677d4036
SHA-1: c6d640c12a6ce0be9c8e2a364b80168c309d13d8
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone 16 Plus iPhone17,4

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%3B23B5073a.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:26 PM UTC
Record fingerprint: 18d16b0fe5b5f30c945b62b572d3ecde