Thanks for the feedback. Yes, RGNVoiceEditor has been designed to work with firmwares from other countries. If it not specific to SG/MAL. Adding non-TTS voices is not a problem. Making them play correctly is another one. Some languages have different rules. You need to add a language that is already supported otherwise there is a chance things will not be spoken correctly. The tool also includes a patcher to convert the voice if it does not work correctly without patch. If someone encounters the issue, I'll give more details.