Hi neil, I have tried to use updater.exe, following your guide, I change one of the voice listing to damayanthi using RGN voice editor, then I update the fw. It seems work, because there is no more warning about incompatibility, but the new problem comes, my device after couple minutes turn off and totally dead. I have tried to charge it via USB computer and car lighter but still won't work. Is it possible because of my battery?