iPhone 3GS · iPhone2,1

iPhone 3GS · iOS 5.1

9B176Unsigned

Catalog data · Last updated: Oct 22, 2026, 4:02 PM UTC

Restore IPSW for iPhone 3GS: iOS 5.1, build 9B176.

Firmware information

Version: iOS 5.1
Build: 9B176
IPSW: Restore IPSW
Size: 0.67 GB
Release date: Not available
File name: iPhone2,1_5.1_9B176_Restore.ipsw
Download host: secure-appldnld.apple.com

IPSW download

Check the model and signing status before downloading.

Download IPSW

Download hostsecure-appldnld.apple.comiPhone2,1_5.1_9B176_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-14182c7ee075a5acbb2595b1cc27fe279e9c343ce

MD551e253431b1080cbbb5073efc87b1bb3