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FIRMWARE DETAILS

iOS 17.3

Build: 21D50Jan 22, 2024Delta OTA
Release CandidateStable

View details

Filename
3d2fb88f3f54a8d31e9e54dc2885274852935e2e.zip
File size
4.69 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
fbe78e33d8b7727d212f7ad6b2b3cd32b973bfafeed7ee457b319d1d55d1ffe3
SHA-1
a016b30937bb91054f9866b7f752cba79a352955
Required starting builds
19H117, 19H12, 19H218
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)

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