Ok so, first off, here are the specs for the r4i, which I posted in another thread. Icon for game: Danny Phantom Urban Jungle http://prntscr.com/5l1i1 Scan of the r4i^ If you cannot read, it says : (underneath the logo) Revolution for DS (dsi/dsl/nds) www.r4ids.com Now, I just bought a micor sd, since thinking the sdhc was the reason it wasnt working, but now it still wont work. Here is the error it gives me. " An error has occured. Press and hold the power button to turn the system off. Please see the nintendo dsi operations manual for help troubleshooting . " Any ideas, maybe im using the wrong firmware? Additional details: The PCB is red, btw, and I can use a 4gb micro sdhc, OR a 2gb micro sdhc, tried both.