So, having previously updated my Acekard with a DS Lite, I figured I was fine. So I updated my DSi's firmware to get to the Shop, and my Danny Phantom Acekard no longer worked. So after some research, I found this link: http://gbatemp.net/t218103-updated-n00b-gu...up-your-acekard With this information: On the 8th of September 2010 Nintendo released firmware update 1.4.1 for the DSi/ DSi XL, this update blocks the Acekard 2i from working even if it was previously updated with the 'Danny Phantom' 1.4 fix. In order for the Acekard 2i to be used on a console with firmware 1.4.1, you need to apply the the 'Alex Rider - Stormbreaker' 1.4.1 fix. You can find out the firmware version of your DSi by going to the System Settings (Wrench Icon) and the Firmware version will be displayed in bottom right corner of the top screen. No retail purchased consoles have been reported as coming with firmware 1.4.1 preinstalled, but they are likely to start showing up within the next few weeks. So it would seem my Acekard needs to be updated AGAIN. How, exactly, do I do that? EDIT: So I take this file, ak2ifw_update_141_DSi.nds, put it on my Micro SD card, and put that in a DS Lite and run it? That's all I need to do?