Well, I don't know... What is blocking your ascent to enlightenment?

I explained that the flash drive creator app appears to work normally but reports "failed" at the end and leaves a drive that appears to be blank. What more do you want to know? Do you want me to work backwards from 10.13 to identify the exact cutoff version? Do you want me to send any specific log(s)? To capture any specific process(es)?