FIRMWARE DETAILS

iOS 15.5

Build: 19F77May 16, 2022Restore IPSW

Stable

View details

Filename: iPhone13,4_15.5_19F77_Restore.ipsw
File size: 6.55 GB
File type: Restore IPSW
Download host: updates.cdn-apple.com
Link availability: Not verified
Source did not report availability
Last link check: Not checked
SHA-256: a599cd0d20eebb6bb1f404f4e5234f5a26adf794cff7a37207b87fe85f5b627a
SHA-1: ec3f54ca2d30738e71853f99943596e73d104969
Required starting builds: Not reported
Board restrictions: Not reported

Compatible hardware (1)

iPhone 12 Pro Max iPhone13,4IPSW.me public API retrieval · Oct 22, 2026, 1:47 PM UTC

Unsigned

Signing is specific to the device and file. A signed build does not guarantee a downgrade or successful installation.

Source provenance

IPSW.mehttps://api.ipsw.me/v4/device/iPhone13%2C4?type=ipsw ↗

Public API; no blanket open-data license established
Last imported: Oct 19, 2026, 6:20 PM UTC
Record fingerprint: a73030e369c00068d8f7c37f6e53274d