iPhone 13 Pro Max · iPhone14,3

iPhone 13 Pro Max · iOS 17.1.1

21B91Unsigned

Catalog data · Last updated: Oct 24, 2026, 11:24 AM UTC

Restore IPSW for iPhone 13 Pro Max: iOS 17.1.1, build 21B91.

Firmware information

Version: iOS 17.1.1
Build: 21B91
IPSW: Restore IPSW
Size: 7.35 GB
Release date: Nov 8, 2023, 6:58 PM UTC
File name: iPhone14,3_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.comiPhone14,3_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-25679dd1d6de4111ee9ce6b1b2801a37380a54e4984399631380bcfd229f99184a1

SHA-13ca21eddd8b40d8e20a7f1bd860ef70301ace660

MD56b29c697d14ce96a367496eb7a6c74b0