TGFlash ECU Flasher Official Forum

So I've had my 2011 335d flashed by my tuner before, believe he used bitbox, and now that hes out of business I can no longer have him make changes to my tune.
So with it previously being flashed through bitbox, would there be any issues with me flashing with TGFlash or am I going to have to purchase bitbox?

Dont worry can do write whit tgflash only need read or virtual read whit tgflash , dont use file reading for other tool