Only windbag here is you, mr correct always, nobody can try you always shout down people, and for info software can be bad still run and give minor problems, all depend on what did not get copy correctly, sp please keep insult to your small self.
whatever,correct diagnosis plan will always win out instead of darting around here and there,i would assume fuel would have been one of the first things to be checked,and can be very easily without special tools.may i ask how often you have personally downloaded software onto a vehicle?
it either downloads or fails