I was flashing my techno h5 that boot looped. (that couldn't boot pass the techno screen), I selected the files won flash tool which have used on other techno h5 phones before, and I used the firmware upgrade button , the flash was interrupted for reasons I don't know and I decided to start the whole process again, but now flash tool won't see the phone even if I get the sound of usb connected on my PC. is the phone dead?