iPhone XS · iPhone11,2

iPhone XS · iOS 17.1.1

21B91Unsigned

Catalog data · Last updated: Oct 24, 2026, 2:38 AM UTC

Restore IPSW for iPhone XS: iOS 17.1.1, build 21B91.

Firmware information

Version: iOS 17.1.1
Build: 21B91
IPSW: Restore IPSW
Size: 7.09 GB
Release date: Nov 8, 2023, 6:58 PM UTC
File name: iPhone11,2,iPhone11,4,iPhone11,6_17.1.1_21B91_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_17.1.1_21B91_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-256139a697d11b11ee2ebf9c2e8551aa817a49ad71f7df524d78651476079150736

SHA-19dd1a2229ac7efd90670722caf5f14b80645b265

MD5f8a249a013dd6ee529af96a6e26119f1