When using any of the downloaders, the Handy Board must first be put into its bootstrap download mode. This is done by first turning the board off, and then turning it on while holding down the STOP button (the button closer to the pair of LEDs to the right of the buttons). When the board is first turned on, these two LEDs should light for about of a second and then both should turn off. The STOP button must be held down continuously during this sequence. When the board is powered on and both of these LEDs are off, it is ready for bootstrap download.