Here I’d like to share my experience use VVDI MB BGA tool key programmer (software 2.1.7) Program keys on a Mercedes-Benz E300 2010 year
I have also done Mercedes W204 all keys lost with VVDi mb tool and it worked every time.
I have unlocked W204 ELV many times also. Sometimes it unlocks quickly and sometimes take long but it unlocks.
