1. Download the zip 2. Delete arm9loaderhax.bin (On nand if it's also there)(Make a back up if you want) 3. Put the arm9loaderhax.bin you got in the zip in the root of the SD 4. Turn on your 3ds 5. It'll turn on, but he/she will get a black screen 6. He/she will try to turn it on without the SD 7. No success DISCALIMER: I AM NOT RESPONSIBLE FOR ANY EFFECTS OF THIS PRANK. INCLUDING BUT NOT LIMITED TO A REAL, RECOVERABLE OR UN-RECOVERABLE BRICK. Wont brick tho. Have fun!! .