a. Press the Menu Button on your Samsung TV remote control and go down to Support.
b. Under Support look for Contact Samsung on the right side.
c. Open Contact Samsung and you will see product information including the Software Version.
You will see something like this
Software version: (for example, T-FXP9UABC-2009.3,BT-S)
You just need to take the last 5 numbers (2009.3)
In this example the software version should be 2009.3