Try this, it should work. Connect esc to prog box with programming wire at prog socket on esc, connect usb to prog box and pc, prog box should display connected to usb, fan spins and light is flashing on ESC, no battery is required, PC should detect new usb device, let it install the usb driver, now open USBLink as admin, load my file from pc, dont forget to rename it as described in previous post. Once open, make desired changes, save to pc(for later use), click save to ESC, should see writing progress bar and confirmation in USBLink (and light flashes faster on ESC), when it is done your changes should be saved, can check with program box alone but you will need a battery connected by the balance plug to the prog box. hope this helps and good luck