FIRMWARE DETAILS

iOS 26.4.2

Build: 23E261Apr 22, 2026Delta OTA

Stable

View details

Filename: 1661778760c2ce9c0091424309986e4f408ca753.zip
File size: 5.76 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: 9368555757db8614852ae9a2be816341f4447b287ffbe756c97760e5c0ef86f0
SHA-1: 1661778760c2ce9c0091424309986e4f408ca753
Required starting builds: 21F101, 21F79, 21F90
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%3B23E261.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:25 PM UTC
Record fingerprint: e2c6b4d70a03d2c34df5f419214a28f1