+## Setting the board to bootloader mode
+
+If you're lucky, the programming script does this automagically for you. If
+however this doesn't work for you, you need to enter the bootloader mode manually
+by plugging the keyboard in while holding the bootloader key. If you did this
+correctly the LEDs will blink and you'll be able to flash your firmware.
+
+The bootloader key is the top left key of your matrix. For a standard board
+from winkeyless.kr this is `L_Ctrl`, but for some custom boards running ps2avrGB
+this might be different. For the Pearl it's `Esc`, for a b.fake it is `q`. If
+you're unsure you should be able to see the key in the bootmapper client.
+
+