There has been quite a few people having problems with there acekard 2i loading roms lately and i know other people have tried to address this but i wanted to have ago myself to help those people who still need help as i myself had this same problem and this is what i did to resolve it.
Follow these steps and hopefully your problem will be fixed :
1.Download AKAIO 1.4.1 and unzip it.
2.Format you micro sd/sdhc card with panasonic formatter.
3.Drag and drop the _aio and the akmenu4.nds to the root of your card.
4.Download the latest AKAIO Loader titled 20-04-09 (AK/2ki loader) unzip and drag that to the _aio/loader folder.
5.Download the latest wifi plugin titled 20-03-09 and unzip and drag that to the _aio/plugin folder so that your able to update your cheats and loaders over wifi.
6.Create a new folder on the root called nintendo ds games(This is what i do myself on all my flashcarts)and place all your roms in there.
7.Now place your acekard 2i in your ds/dsi and try it
AKAIO 1.4.1 Here :http://gbatemp.net/index.php?download=5069
Panasonic Formatter :http://gbatemp.net/index.php?download=4003
Latest AKAIO Loader :http://akaio.gbatemp.net/loaders/
Latest Wifi Plugin :http://gbatemp.net/index.php?download=5112
Follow these steps and hopefully your problem will be fixed :
1.Download AKAIO 1.4.1 and unzip it.
2.Format you micro sd/sdhc card with panasonic formatter.
3.Drag and drop the _aio and the akmenu4.nds to the root of your card.
4.Download the latest AKAIO Loader titled 20-04-09 (AK/2ki loader) unzip and drag that to the _aio/loader folder.
5.Download the latest wifi plugin titled 20-03-09 and unzip and drag that to the _aio/plugin folder so that your able to update your cheats and loaders over wifi.
6.Create a new folder on the root called nintendo ds games(This is what i do myself on all my flashcarts)and place all your roms in there.
7.Now place your acekard 2i in your ds/dsi and try it
AKAIO 1.4.1 Here :http://gbatemp.net/index.php?download=5069
Panasonic Formatter :http://gbatemp.net/index.php?download=4003
Latest AKAIO Loader :http://akaio.gbatemp.net/loaders/
Latest Wifi Plugin :http://gbatemp.net/index.php?download=5112