1. Press F8 before windows boot (after bios). 2. Select "Disable Driver Signature Enforcement" and boot up windows. 3. Connect ur phone to ur PC / laptop (Phone must be off). 4. The driver Samsung MITs USB sync will be installed. 5. Open Device Manager, double-click on Samsung MITs USB sync and re-install with driver provided below. 6. Choose Update Driver->Browse my computer for driver software->Let me pick from a list of device drivers on my computer->Click on Have Disk and browse to the driver folder and install. (If prompted driver unsigned, ignore and click ok. Driver is dated 2003). 7. Then right-click on Octans Downloader->Compatibility, select "Windows XP (SP3)" and check "Run as Administrator".