FIRMWARE DETAILS

iOS 17.3

Build: 21D50Jan 22, 2024Delta OTA

Release CandidateStable

View details

Filename: a836e93f7add0d849e603968c7932c04006eecaf.zip
File size: 4.82 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: 0971afa367e47d10fa2053996842ada813e5d51ad1ccc2a4e29cc89cd7533cb4
SHA-1: ca55bfe911c5a98bf0e77899f9bf3b74f898e54a
Required starting builds: 18G69, 18G82, 18H107, 18H17
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%3B21D50-RC.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: 4b3232377333738272b60b561711624e

AppleDBhttps://api.appledb.dev/ios/iOS%3B21D50.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: b760c8e57a8ccf1aa32ec81eaf502938