Is there any way to tell if your ECU has already been flashed?

I am the 3rd owner of my 2015 FZ-07. The 1st owner put on a bunch of aftermarket parts including an M4 exhaust. The 2nd owner does not know. Is there any way to tell if he flashed it? I wouldn't want to waste $300+ to try and flash it again. via /r/motorcycles https://www.reddit.com/r/motorcycles/comments/9es74k/is_there_any_way_to_tell_if_your_ecu_has_already/?utm_source=ifttt