You will need to have a USB/RS232 to TTL Serial adapter to connect between your PC and the uMMC/uMP3/rMP3.

(You can use an Arduino or Arduino-clone to connect to the uMMC/uMP3/rMP3 using a serial pass-through application - see this)

Make sure the connection is such that the "T" connection on the uMMC/uMP3/rMP3 connects to the "input" to the Host/PC and the "R" connection goes to the "output" from the Host/PC.

Start a "Command Prompt" on the PC and navigate to where you have extracted the firmware files for the uMMC/uMP3/rMP3.

From there, you can execute:

update firmware.rfw -COM1


(replace "firmware.rfw" with the file included in the ZIP)

and the update program will update the firmware on the uMMC/uMP3/rMP3. NOTE: you can change the -COM1 to whatever serial port you are using.

A progress will show the status of the update, and once it reaches 100%, the update will be complete. The uMMC/uMP3/rMP3 will automatically restart after the update.

(We are working on a java version of an uploader. If you would like to help, please contact support@roguerobotics.com.)