iPod Touch 3G iOS 5 Firmware 5.1.1 Firmware 5.1 Firmware 5.0.1 Firmware 5.0 iOS 4 Firmware 4.2.1 Firmware 4.1 Firmware 4.0.2 Firmware 4.0 iOS 3 Firmware 3.1.1 iOS 2 Firmware 2.2.1 Firmware 2.2