Flashing firmware

In the mdloader directory:

$ sudo ./mdloader_mac --first --download <firmware.bin> --restart

When Scanning for device for 60 seconds appears, put the keyboard in DFU (Device Firmware Update) mode by pressing and holding for two seconds either:

• the default key combo Fn-b, assuming it hasn't been overridden, or
• the hardware reset button located under the right edge of the keyboard (requires a pin or probe)

Function keys

Apple bluetooth keyboard:

• Function keys except (blank) F5 & F6 send no keycode unless Fn is pressed, but are recognized as media keys etc.
• If Fn is pressed, keys send the appropriate keycodes