Region Free Utility for Lite-ON Manufactured Drives
Please note that I did not create this software. I am only providing it for download.
Making the currently selected drive region free is as easy as clicking the Disable button. This disables the region counter of the drive. It is normal to see an alert saying "RPC Work Disabled" and a message:
"052400 INVALID FIELD IN CDB
RPC maybe disabled."
Don't forget that there is more to having a region free system than just making your drive region free. For more info on this, see here.
Try playing with the virtual LtnRPC for Windows below, it might help you get an idea of what to expect.