Originally Posted by Dr.M
I used John's PC app v1.22 to flash both my CXs. However, it's still possible that some of the later CXs cannot be flashed to ZYX. I just helped a guy on HF to flash his CX to ZYX v3.50 and it bricked it, he went back to CX v1...
thanks, going to give that a try and report back.