7 To update your USB Wireless Transmitter, first disconnect the C40 TR Controller from your PC or Mac. 6 Click on the Update Now button and follow the on-screen prompts to update the firmware on your controller. You will automatically be prompted to update the firmware of your controller after launching the C40 TR Configuration Software. While in Big Picture Mode, select the Settings icon from the top right section of the client. Insert the wireless receiver into the front of your PC with clear line of sight to the controller Turn your Steam Controller off and launch Big Picture Mode with your mouse and keyboard. How To Set Up Controller For Minecraft Mac Free.