Here's how to view the current software version in your TM-2:
1. Press and hold the SHIFT button, and then press the INST button.
2. Press the right arrow button (>) once to select "SYSTEM,' and then press + (ENTER).
3. Press (>) repeatedly until "SYSTEM / INFO" appears. The version number is displayed on the lower right side.
4. Press the INST button twice when you're finished.