Can you use the ATV71 main control board on the ATV61 drives?

Issue:
Can you use the ATV71 main control board on the ATV61 drives?

Product Line:
Altivar ATV61 and ATV71

Environment:
All

Cause:
Can you put an ATV71 main control board on the ATV61 to make the ATV61 drive an ATV71?

Resolution:
you can not use the ATV61 main control boards on the ATV71 and you can not use the ATV71 main control board on the ATV61.

These boards are not to be interchanged.