The following procedure can be used to check the ROM version:
- Power up the JV-90 while holding NUMBER 1, 8 and PCM CARD B.
- Press BANK 8.
- Press EXIT twice to return to play mode.
Owner's Manual: https://www.roland.com/us/support/manual_archive/
The following procedure can be used to check the ROM version:
Owner's Manual: https://www.roland.com/us/support/manual_archive/