@wartstew

I was having the same problem that flashing didn't work. However, it turned out that I was using the wrong command, and from what I can tell, you are too. The command should be:

./flash -F RX=44_DIABLO_4.2008-23-14_PR_COMBINED_MR0_ARM.bin -f -R

After I used that, it flashed fine. Hope that works for you.