Ok, so I foolishly updated my Dsi because I wanted to access the store and now my Acekard won't function anymore. I already installed Akaio 1.8.7 but it still doesn't work. Any help would be appreciated.
if you have download the right update file, here are How to update Acekard 2i to 3DS 2.0.0-2 and DSi 1.4.2,This update support 3DS2.0 and DSi1.4.2.
If you've updated your DSi to 1.4.2 before you updated your Acekard then you can't use your DSi to update the card. You need to use a DSi that has not been updated to 1.4.2 or use a DS Lite/Phat if you have access to one.