No way, never ever you can make it RPC1.
Welcome to the Forum.
Concerning Matshita / Matsushita / Panasonic Optical Drives and RPC-1 Region Free Firmware. Perhaps reviewing a Forum posting by a Member of the SlySoft Staff will shed some light on the problem ->
Although the above referenced Forum posting is referring to the SlySoft â€˜AnyDVDâ€™ software program the information contained in the posting is also valid for Matshita / Matsushita / Panasonic Optical Drives RPC-1 Region Free Firmware.