@Ray > If your unit is 2.02, you don't need to update; the 2.03 version was an internal update. If your SEP firmware is OLDER than 2.02, then all you need to update is the USB cable and even the demo version of DJS will allow you to run the updater.
Of course, it's all much easier if you have access to the MEP. Anyone local who has one you can use?