FIRMWARE DETAILS

iOS 26.3.1

Build: 23D8133Mar 4, 2026Delta OTA

Stable

View details

Filename: 4b301bf426ddcbd1dfd0ce5ea0e561fa18b9bc7dec6b9c769221354d9bd86fe8.aea
File size: 1.98 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: 65fddfaa22bdd4feb960aabecd2660fb348028eca7e24c43b840d5bc3eeb8146
SHA-1: ba0401e1cc1e06b4be9537255b2c7ee83c25c82a
Required starting builds: 23C52, 23C54, 23C55, 23C71
Board restrictions: Not reported

OTA packages can require an exact starting build and board. A matching hardware identifier alone is not sufficient for installation.

iPhone 16 Pro iPhone17,1

Unknown

Signing is specific to the device and file. A signed build does not guarantee a downgrade or successful installation.

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:25 PM UTC
Record fingerprint: d48da896f63809bf3a31e9d1728e206a