FIRMWARE DETAILS

iOS 18.3.1

Build: 22D72Feb 10, 2025Delta OTA

Stable

View details

Filename: 42fe4f41b621b123384b0b1a4b7bfe739ab366bf.zip
File size: 3.55 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: acf57ae144d8efb19f3a5ad779f7406cd8ddcd43833b43994df894dbfe4d1b12
SHA-1: 42fe4f41b621b123384b0b1a4b7bfe739ab366bf
Required starting builds: 21D50, 21D61
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 XR iPhone11,8

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%3B22D72.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:27 PM UTC
Record fingerprint: 3aa1b12ab32d61552bc2075797d3a0f8