Which OS are you using right now? You can also try with the flashall script
Have you tried to use the Terminal Console?
If you are on Windows, could you post a screenshot of your Ports in the Device Manager?
If you are on Mac or Linux, please post a screenshot of ls /dev
If it's getting hot as soon as you power it up, you should check for short circuit on the board using multi-meter or some other device without switching on Edison. You can also try using power supply with short circuit detection to power up the Edison.
What was the outcome of running the flashall script? Have you checked if there is something visual in the Expansion board that may be causing a short circuit?
If the flashall script and the Flash Tool Lite did not work for you and the board is still getting hot, I suggest you to send an email to: Intel Support