iPhone 15 Pro Max · iPhone16,2

iPhone 15 Pro Max · iOS 17.5.1

21F90Unsigned

Catalog data · Last updated: Oct 23, 2026, 1:49 AM UTC

Restore IPSW for iPhone 15 Pro Max: iOS 17.5.1, build 21F90.

Firmware information

Version: iOS 17.5.1
Build: 21F90
IPSW: Restore IPSW
Size: 7.71 GB
Release date: May 20, 2024, 6:01 PM UTC
File name: iPhone16,2_17.5.1_21F90_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_17.5.1_21F90_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-25689e1eed78fb37c96e5d98f0dbf9e1569ee63e83b05657226ace2f70df803cd14

SHA-109ec0f44cb82f421af2f5fcbfa7de3beec59570e

MD5bf865b8f3977e2c09732a42822206e20