I believe my son had updated himself to v1.4.3U to get into the DSi Shop, now his Acekard 2i doesn't work. I just purchased another online through gameplayfun.com and it doesn't work, either. Is there a way to fix it without needing a different DS? Possibly downgrade the DSi? The new acekard I got today has the Chessmaster logo. I'm not sure what version (if any) that signifies. Any idea or help would be greatly appreciated, thank you.