Apple is on verge of releasing iPhone’s latest OS 4.0 with many new features and enhancements. The final feature list will be available on January 27, 2010 at event being held at the Yerba Buena Center for the Arts Theater in San Francisco.
Whether you want to upgrade your iPhone to latest firmware or restore it, you need to download the firmware (IPSW file) and latest version of itunes software. Below are the links for all iphone devices which are compatible with iOS 7 operating system. First a word of caution take a complete backup before restoring or updating your apple iphone. Restoring your device will erase all your stored data, contacts and any other information saved. All your apps will also be deleted.