iPhone 15 Pro Max · iPhone16,2

iPhone 15 Pro Max · iOS 17.1.1

21B91Unsigned

Catalog data · Last updated: Oct 23, 2026, 12:49 AM UTC

Restore IPSW for iPhone 15 Pro Max: iOS 17.1.1, build 21B91.

Firmware information

Version: iOS 17.1.1
Build: 21B91
IPSW: Restore IPSW
Size: 7.64 GB
Release date: Nov 8, 2023, 6:58 PM UTC
File name: iPhone16,2_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.comiPhone16,2_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-256a60eca60851878cc13a7f01849ee4a634ed8b06a94a52fdbaccfdd1c7c615ff6

SHA-18b7790adc1fc3eb757da247b3cf174fc76bfdd32

MD5fbb458a16a9dff4295fb86419dd534c8