Use the following procedure to display the current ROM version of the JV-1010.
- Rotate the PART knob to "Part 15."
- Rotate the CATEGORY/BANK knob to "KEY & ORGAN."
- Set the switch on the rear panel of the JV-1010 to "Mac."
- Power on while pushing the VOLUME knob.
- After 3 seconds, release the VOLUME knob and turn the CATEGORY/BANK knob to "Piano."
The LCD will display the Version Number. - Turn the unit off and back on to return to normal mode.
Owner's Manual: https://www.roland.com/us/support/manual_archive/