The first step is to download the software from here
Next install and configure the software, if you have problems download and watch this video
After you install and set up your software, take the USB cable and connect the radio to your PC.
Your radio needs to be powered on during programming, so connect it to a 12-volt power source.
Click Program > Read From Radio
Next Select "Show VSWR Launch" (Shown in the picture below)
The Last step is to Click Program > Write to Radio. After that's complete turn the radio off, disconnect the USB and Power it back up. Your radio will now show the SWR in the channel display when you are transmitting.