iPhone 17 Pro Max · iPhone18,2

iPhone 17 Pro Max · iOS 26.5.1

23F81Unsigned

Catalog data · Last updated: Oct 24, 2026, 7:39 AM UTC

Restore IPSW for iPhone 17 Pro Max: iOS 26.5.1, build 23F81.

Firmware information

Version: iOS 26.5.1
Build: 23F81
IPSW: Restore IPSW
Size: 10.53 GB
Release date: Jun 1, 2026, 5:49 PM UTC
File name: iPhone18,2_26.5.1_23F81_Restore.ipsw
Download host: updates.cdn-apple.com

IPSW download

Check the model and signing status before downloading.

Download IPSW

Download hostupdates.cdn-apple.comiPhone18,2_26.5.1_23F81_Restore.ipsw

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-2564154f36420bf2f22f0d3ce58cbf23221306795f86f1b7d3e880b4cf9f997137a

SHA-106a56a9f679a41e9625b712c695bb42d362f71d1

MD5d13a91380ce32cb3177b94851af87d8c