Thanks, I have the “RN-2483-PICTAIL” board, I was confusing the two headers. I have now uploaded firmware 1.0.1 to the PIC18LF46K22 and the OLED S/W to the PIC18LF25K50.I can now see the COM port again on my PC but the Tx/Rx green LEDs are permanently on and the device is not responding to the “sys get ver” command. Is the OLED the correct software for the RN-2483-PICTAIL board? (I don’t see an alternative software download in the product page
http://www.microchip.com/DevelopmentTools/ProductDetails.aspx?PartNO=RN-2483-PICTAIL )