If you are removing a device from your system, it is necessary to factory reset the device before repairing.On the Hex Command, there is a small gray button on the bottom. Use a pen to hold this button down for 10 seconds and release. The light on your Command will turn green. On the Hex Senses, there is a small pinhole on the side of the device. Use a pin to hold the button down for 10 seconds and release. The light on your Sense will turn green.