No, there is not. To reprogram the Flash memory by serial programmer, the ID code already programmed in the MCU should match the one to be entered by the programmer. If the ID code programmed lastly is unknown and cannot be identified, it is impossible to reprogram the Flash memory by serial programmer.
However, when the ROM code protect function is not used, it is possible to reprogram it regardless of the ID code with a parallel programmer.
|M16C/6NK, M16C/6NL, M16C/6NM, M16C/6NN|