iPhone 3GS · iPhone2,1

iPhone 3GS · iOS 4.0.1

8A306Unsigned

Catalog data · Last updated: Oct 23, 2026, 9:23 PM UTC

Restore IPSW for iPhone 3GS: iOS 4.0.1, build 8A306.

Firmware information

Version: iOS 4.0.1
Build: 8A306
IPSW: Restore IPSW
Size: 0.37 GB
Release date: Not available
File name: iPhone2,1_4.0.1_8A306_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_4.0.1_8A306_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-25638b0efbc21063588156ed555c12bba46aee2795781b3269a952fd456009526f8

SHA-1c2b6fb9a158547ce726baa1bf8f0558a71518fec

MD5a3104ca3b72a91bc7eff037ee320ecc5