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FIRMWARE DETAILS

iOS 17.3

Build: 21D50Jan 22, 2024Delta OTA
Release CandidateStable

View details

Filename
773483affdde8cc2268c1ead90f5079b46edb553.zip
File size
4.46 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
7251f34a4ce0c4b7cb818ed80d05da2bf9de39f4d5ce4998cd06739de01c8238
SHA-1
4b71c60d14749a3eae71d1371f758d505ace0e05
Required starting builds
19C56, 19C63
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 XS iPhone11,2
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