I posted this in another topic, but it might be some help here:
QUOTE said:Okay, I did some testing.
Rebooting and trying with the partitioned 4gb resulted in the same error. Trying with both sticks in both slots resulted in no partition found, with the 4gb unrecognised.
Switching them around, so the working USB was in the left slot, resulted in my original error.
Plugging in an extension with the 4gb resulted in the error.
The extension + the 256mb resulted in the no partition found.
Switching the 256mb to the 4gb in the extension, resulted in the 4gb showing up. I then pressed B to exit back to the menu, whereupon Animal Crossing came up on the device. I had the disc out and attempted to boot the game, which worked fine.
So it seems if you have a non-functioning device, you may be able to get functionality out of it, via swapping for a working one.