This gets to be more of a pain if you don't have a laptop but it can be done without too much trouble. Because you said you're sitting in your house doing this, I'm assuming you have a desktop computer. I am also assuming this means that you have not connected your EZ-Guide+ to your computer with the cable GPSNut talked about. The computer does have to be physically connected to the EZ-Guide+ with the proper cable to do this update. There is no way for the EZ-Guide+ to recieve information via a USB drive or any type of disk unfortunately.

If you have a desktop the easiest way to connect your EZ-Guide+ to your computer is to bring your EZ-Guide+ inside and connect it to a little batter like what you might find in a motorcycle and do the update inside while sitting at your computer. Your other option is to find a friend that has a laptop with a serial port (so you can use the appropriate cable) and go out to your machine to do the update. You will have to re-download the EZ-Toolbox on your friends computer, install the EZ-Toolbox on your friends computer, download the update on your friends computer. Either way you have some obstacles but you can get it done.