FIRMWARE DETAILS

iOS 26.1 beta 4

Build: 23B5073aOct 20, 2025Delta OTA

Beta

View details

Filename: 44f938ae4d9314969f855248e83a6df1181ec66e.zip
File size: 2.08 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: 820d61415e038f28281c02d07250fa09269fbdb00d5aa80d9d80385f9668f450
SHA-1: 44f938ae4d9314969f855248e83a6df1181ec66e
Required starting builds: 23B5064e
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 13 iPhone14,5

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