Do you have USB Debugging enabled in Developer Options? Have you allowed the device by tapping the prompt to on the device to be connected to by ADB?I have installed the slim rom in my amalogic S905x4. I have successfull installed the new frimware through the amlogic burning tool. Bu i cant able to unload the bootloader. I have install the adb and adb fastboot. Commads are working in pc. But adb did not find any device. I also when i put the usb in the pc there is no sound. Can some one suggest me the some method.