iPhone 3GS · iPhone2,1

iPhone 3GS · iOS 4.3.4

8K2Unsigned

Catalog data · Last updated: Oct 21, 2026, 6:27 PM UTC

Restore IPSW for iPhone 3GS: iOS 4.3.4, build 8K2.

Firmware information

Version: iOS 4.3.4
Build: 8K2
IPSW: Restore IPSW
Size: 0.41 GB
Release date: Not available
File name: iPhone2,1_4.3.4_8K2_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_4.3.4_8K2_Restore.ipsw

The catalog marks this build as unsigned. A normal restore may not be accepted.

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-256f516f1b5ac2111ca8b81ffa6e9b3867d74cf28c84100a2cf3baea0842a31b1cb

SHA-1be06903d55dc13d8948ae4cfa619a277df4d4e5b

MD5a172829312329d3bda87d23abf5ec4d4