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FIRMWARE DETAILS

iOS 17.1 beta 3

Build: 21B5066aOct 10, 2023Delta OTA
Beta

View details

Filename
fc88c44edf4cd05c5e10e1a8f7baabe3efe53fec.zip
File size
489.9 MB
File type
Delta OTA
Download host
updates.cdn-apple.com
Link availability
Not verified

Source reports active

Last link check
Not checked
SHA-256
203aced77da8cc40323241dcce76731532a26dd2e590c1835e5aa95944067752
SHA-1
e626a10f6944e5d14a016a5b57e8f7ea3ef7f3be
Required starting builds
21B5056e
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%3B21B5066a.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 6:28 PM UTC
Record fingerprint: b73e131c06b516a6126e8e74a8094a4c