[Q] Waiting for device while easy rooting kit topic

Hi, I was root my sp before then I install lollipop rom and I dont like this , so ı want to install stock room ı use flashtool to install stock room ı installed but while use easyrooting kit to rooting my photo the cmd stuck at the waiting for devide ı did usb debugging and the others sorry for my bad english please help my how to root my xperia and install cmw menu then upgrade 4.3 ı did one time but in this time not working