I recently bought the AK2I card along with the 8GB Kingston Class4 Micro-SDHC TF Card 8G. I loaded the updated firmware, along with some .nds games on the micro card. Pop it in the DSL so that I can update the kart to be able to use it on the DSI, and I see the Acekard, but it has none of the files on it to go any further (to update firmware). I get a black screen error stating "system file error". I have 2 of these Micro cards the same, is there something wrong with the card or is it me??? Any help would be most helpful.
...format your SD Card & Try downloading the firmware again in case you have a corrupted file there somewhere.