iOS 4 Firmware(iPod Touch 2G - iPod Touch 3G - iPhone 3G - iPhone 3GS - iPhone 4)| 1.89Gb With its easy-to-use interface, amazing features, and rock-solid stability, iOS — Apple’s mobile operating system — is the foundation of iPhone. And even as other phones try to catch up, the technologies and features built into iOS 4 keep it years ahead of the competition.

iPhone 3GS iOS4 Custom Firmware | 391 MB This is custom build of iOS 4, for iPhone 3GS only. It is jailbroken, and includes Cydia. It is NOT unlocked, and NOT hactivated. It comes with the newest baseband, 05.13.04. If you need your phone unlocked, use ultrasn0w, after installing this. This build has 1GB partition, no custom Cydia packages, and no custom boot/recovery images. Pretty much stock, except for jailbreak and Cydia installed.

iPhone 4.0 3Gs Firmware | 377.92 MB

iPhone 2G 3.1.3(7E18)Custom Firmware | 247 MB