dear drdre20013, u need to switch of ur compter, again reboot without usb dcu 60 cable and uninstall driver of that usb cable named sony ericsson and once again reboot and this time install xs++ and insert ur phone usbin usb port, connect it to phone by holding c button in phone, make sure phone is fully charged and sim removed, and then try to flash, your phone might get recognised and u can further proceed.