+# Flashing the firmware onto the keyboard
+
+The ErgoDone uses a customized HID bootloader rather than the Teensy one. It doesn't need an OS driver, and the required actions before flashing are a little different than with an ErgoDox.
+
+1. To enter flash mode, disconnect the keyboard first. Then, on the left-hand device, in the top row, press and hold the two rightmost keys while reconnecting the keyboard.