iPhone XS · iPhone11,2

iPhone XS · iOS 17.5

21F79Unsigned

Catalog data · Last updated: Oct 23, 2026, 11:36 AM UTC

Restore IPSW for iPhone XS: iOS 17.5, build 21F79.

Firmware information

Version: iOS 17.5
Build: 21F79
IPSW: Restore IPSW
Size: 7.27 GB
Release date: May 13, 2024, 6:05 PM UTC
File name: iPhone11,2,iPhone11,4,iPhone11,6_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.comiPhone11,2,iPhone11,4,iPhone11,6_17.5_21F79_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-25669eeb7aa17f34cd6722437499d2aa163b44430079c97014fc0f7c4292a333e8c

SHA-1ed6ecaa9f60371ce384b7106e2d3f8cce33afd73

MD571f16ac237d962c5e4eeaadf12c76903