iPhone 15 Pro Max · iPhone16,2

iPhone 15 Pro Max · iOS 17.5

21F79Unsigned

Catalog data · Last updated: Oct 22, 2026, 5:00 AM UTC

Restore IPSW for iPhone 15 Pro Max: iOS 17.5, build 21F79.

Firmware information

Version: iOS 17.5
Build: 21F79
IPSW: Restore IPSW
Size: 7.71 GB
Release date: May 13, 2024, 6:05 PM UTC
File name: iPhone16,2_17.5_21F79_Restore.ipsw
Download host: updates.cdn-apple.com

IPSW download

Check the model and signing status before downloading.

Download IPSW

Download hostupdates.cdn-apple.comiPhone16,2_17.5_21F79_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-256e08d32fc0b12a47f7108089cfd822f4d03320d77ee27a657c952812f10143ca4

SHA-1b20d77f8398f21edd2613f06935a802844eb11f9

MD592ecb50fbcb2703f2d7aa809930a4a95