I suddenly unplug cable while flashing by 3uTools then can't start

Hi guys, my iphone 7 plus using an alternative lcd screen, i want to flashing it to make the os clean before jailbreak, but while flashing using 3utools, i suddenly unplug my usb cable so that the phone which was in dfu mode and progress bar shut down, then i cant open it despite of any button combination, i tried to re-plug but 3uTools cant determine my iphone any more