Download iOS 3.1.2 Build 7D11 IPSW Firmware Restore Files
Download the IPSW iOS 3.1.2 (Build 7D11) firmware file released at 05 October 2009 intended to restore iPhone 3G[S] via iTunes. IPSW iOS 3.1.2 build 7D11 is unsigned by Apple to update Apple device software.
