First download Drivers (attachment)
1. Extract USBFlash.rar on your PC.
2. Turn off phone, re-insert battery.
3. Plug in USB cable (DCU-60) to USB port on your PC.
4. open XS++, press "connect" button.
5. Connect your phone holding "C", until windows shows buble “New hardware detected”
6. install the usbflash driver.