Hey guys. I won an eBay auction the other day for two DSi XLs and two R4i cards (they say 3DS 4.5 or something on them). They both work fine with the DSi XLs, but only one works in my 3DS...the other gives me a black screen with an error about having to restart the system. I'm new to the R4i, but I've used the M3Simply and AceKard2i in the past. I formatted my microsd cards and put the latest version, i think it's 1.69b? from the R4i site, but still only one seems to work with the 3DS. Obviously I'm glad one works, but I'm just curious as to why the other doesnt. Anything I should do or know about these things?