I believe have the latest kernel (angel halo DORASU) and AKIKO 1.8.7. I'm running 3DS firmware 2.1.0-4U. It won't boot. The system goes black when it boots for a moment and then there is an error message "An error has occurred. Hold down the POWER Button to turn off the power, then turn it on and try again." I have tried reformatting the card a couple times and it still does the same thing. The card was working before on my DSi before I sold it. I updated it with a friend's DSLite just before so it was suppose to be compatable with the 3DS.