I got recently purchased a 4gb Sandisk card, then, when i got home, i instantly placed said card into my R4, when it started to load, all it got to was the Loading Screen. White letters: Loading Then, when i closed the top screen ( not shutting it off ), i was just frozen, so i went onto the R4 website and found the manual, then, after installing the latest ver. I added a game, just to see if it'll work. However, again the problem was still there, so right now im really angry cause i wanted to play on my new R4 but can't because of all this. So, can someone happily tell me how to fix this problem. P.S: I got the card from Best Buy. not the R4 cartilage.
I'm new to DS hacking, but I don't think cards older than the M3 Real support 4 gb SDHC memory cards (your card).