Alternatively, you can download the standalone Undub patch (usually an .xdelta or .ips file) from community hubs like Romhacking.net. Use a tool like Delta Patcher to apply the patch directly to an clean, official .nds ROM of the US or EU version.
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: Many undub versions also restore the higher-quality Japanese video files for anime cutscenes, reducing the pixelation seen in the US release. How to Play the Undub ROM Alternatively, you can download the standalone Undub patch