iPhone 12 Pro Max · iPhone13,4

iPhone 12 Pro Max · iOS 17.3

21D50Unsigned

Catalog data · Last updated: Oct 24, 2026, 12:53 AM UTC

Restore IPSW for iPhone 12 Pro Max: iOS 17.3, build 21D50.

Firmware information

Version: iOS 17.3
Build: 21D50
IPSW: Restore IPSW
Size: 7.25 GB
Release date: Jan 22, 2024, 6:58 PM UTC
File name: iPhone13,4_17.3_21D50_Restore.ipsw
Download host: updates.cdn-apple.com

IPSW download

Check the model and signing status before downloading.

Download IPSW

Download hostupdates.cdn-apple.comiPhone13,4_17.3_21D50_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-256cb7b52be518fd8a83a75f6ce19bf3ed0df1e57089ee72ba9093b12b793ac89a4

SHA-12ed4905b965ccd43c0dc0541667d665c2b01ddae

MD5fa5c4ca9520af50141ff05a337ae1aed