Use the following procedure to check the ROM version of the EP-707:
1) Power on while holding MUSIC STYLE buttons 3, 5 and 7.
2) Release those buttons, then press MUSIC STYLE button 1.
The current ROM version of the unit will be show in the display.
1) Power on while holding MUSIC STYLE buttons 3, 5 and 7.
2) Release those buttons, then press MUSIC STYLE button 1.
The current ROM version of the unit will be show in the display.