iPhone XS · iPhone11,2

iPhone XS · iOS 17.5.1

21F90Unsigned

Catalog data · Last updated: Oct 23, 2026, 12:51 PM UTC

Restore IPSW for iPhone XS: iOS 17.5.1, build 21F90.

Firmware information

Version: iOS 17.5.1
Build: 21F90
IPSW: Restore IPSW
Size: 7.27 GB
Release date: May 20, 2024, 6:01 PM UTC
File name: iPhone11,2,iPhone11,4,iPhone11,6_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.comiPhone11,2,iPhone11,4,iPhone11,6_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-2567d7b7b30551530e4b95d3bdba9ac28e8a39ec1500bfe0674422cbfaabf68eb9e

SHA-181b4899c48b079b5112f4958ccb8a61f24c789b1

MD59a099d38f67e68f04a7ae1dd9ab6ce55