If you're only wanting to add support a local Asian voice, you might be better off just modifying the US/EU firmware to support the local TTS/non-TTS *vpn file/s. See this post how to do it: [Only registered and activated users can see links. ] (post #63). If the voice you want to use is supported in RGNVoiceEditor that's a far better option to a risky firmware cross-flashing.