1. Create a folder named `Nintendo DSiWare` inside of the `<ID1>`
+ If you already had the folder *and* there are any existing DSiWare backup files (`<8-character-id>.bin`) inside, copy them to your PC and remove them from your SD card
1. With your device still powered off, hold the following buttons: (Left Shoulder) + (Right Shoulder) + (D-Pad Up) + (A), and while holding these buttons together, power on your device
+ Keep holding the buttons until the device boots into Safe Mode (a "system update" menu)