To display the current ROM version of the JV-80, while holding down the NUMBER 1 button and turn on the power.
Owner's Manual: https://www.roland.com/us/support/manual_archive/
To display the current ROM version of the JV-80, while holding down the NUMBER 1 button and turn on the power.
Owner's Manual: https://www.roland.com/us/support/manual_archive/