If you don’t know your Jumbo universal remote code, you must use the code search function. To begin, turn on the device you want to control, aim the remote at it, and press the Code Search button until the light stays on. Then, press the button for the device you want to program. When the light on the remote stays lit, press the Power button on the remote until the device turns off (you may need to press the Power button several times). After the device turns off, press Enter on the remote to save the code.