SPD-S: Identifying the Version Number
Use the following procedure to identify the rom version in the SPD-S:
1. Power on while holding ALL SOUND OFF and CARD for about 10 seconds.
When "CPU 1.0 BLD" shows in the display, release the buttons.
2. Press PAGE right until "PRG -.--" shows in the display. This is the current version of your SPD-S.