EDIT:Before you read this I just have one suggestion. Why not sticky a thread about 3DS compatible flashcarts. Seriously, it would avoid multiple threads like this. Well, it's official! The new(well, not really) R4i SDHC RTS(site) is compatible with the 3DS. Well, it's compatible with firmware V1.0.0-0 anyway. Not sure about the latest firmware update. For any region BTW. Proof: [youtube]http://www.youtube.com/watch?v=ccrsj3RDZ84[/youtube] There is also proof of it booting roms. Well, it boots Pokemon Black anyway. Cheers!