It is COM 1 and I have not yet been able to load using the XFLASH. I don't know where COM 2 came from - not here anyway. So ignore it. The only successfull load is by loading FLASHUTL with EZLOAD and then using Terraterm to delete flash memory and load UHFX3.HEX. I have also used a DOS only m/c for all these trials with XFLASH, same machine as I run UHFA actually.