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← iPhone 12
iPhone 12 · iPhone13,2

iPhone 12 · iOS 15.3.1

19D52Unsigned
Catalog data · Last updated: Oct 22, 2026, 4:15 AM UTC

Restore IPSW for iPhone 12: iOS 15.3.1, build 19D52.

Firmware information

IPSW download

Check the model and signing status before downloading.

Download IPSW
Download hostupdates.cdn-apple.comiPhone13,2,iPhone13,3_15.3.1_19D52_Restore.ipsw

The catalog marks this build as unsigned. A normal restore may not be accepted.

Back up before you restore. A restore can erase the data on the device. The identifier has to match, and a file you can download may still be rejected for restore.

Checksum

SHA-256a61da3258712c5524c868c1e4fc388ed8ae49446f44916c18765475610a5f44a
SHA-1b0d1050ec4cfc4c7556d86fdb2144948cfaeffe7
MD54977e9335bf2640c0851edd496d4935f