DaveW,
I believe you have the wrong file.? The name you gave is for an older version that was before the V5 and V6 boards came out.? Try this one on the primary Nano:
UBITXV5_CEC_V1.200_NX_S.hex
I have attached the file.
This assumes that you have a v6 board.? You did not state that in your reply.
73
Evan
AC9TU
