Originally Posted by THE TECH
FYI, for reprogramming or doing factory updates on the car as the OP asked, this will not work.
It worked on my friends 335. His battery died during flashing and left a part of the ecu blank. This was before the charger. (my battery never died so I can't comment on my car lol). Turned up the charger to 8 amps and it worked.
If this isn't OPs question then my bad lol. I guess I was understanding it wrong. And if I'm mixing up what I have with a charger then my mistake again lol