HOW TO UPGRADE FIRMWARE

Make sure to save your calibration and other settings with SETUP Utility
-or- be prepared to do them over.  We strongly recommend that you
do an EE Reset after loading new firmware so the everything is initialized
the way the new firmware wants to see it.

1.	Extract these files to a directory
2.	Connect RT-21 to RS32 port (see manual if you must use USB)
3.	Double click on tinybldWin.exe
4.	Select the correct COM port, 57600 baud
5.	Browse to select correct .hex file for your controller
6.	Click on Write Flash
7.	Cycle power on RT-21
8.	Display will be blank until complete, about 20 seconds.




