There are several different versions depending on the display(s) you're using. Be sure you're trying to load the correct version.
If you're loading a .hex file, I believe you want the?UBITX_CEC_V1.100_16P.hex file.
I you're compiling & downloading from source code you need to be sure you have the correct display selected by editing the header file.
73...? ? Mark? ? ?AA7TA