Hi, I experienced the same problem on my device after reading codes of a w212, after
this all the data of Mercedes was destroyed,, Mercedes LD is still in function.when I
choose Mercedes now the device confirms that all the data is destroyed and the device
will restart after a couple of seconds, but Mercedes stays gone.all other brands still
work normally.

Bei mir ist der Mercedes auch weg. Hat jemand schon eine Lösung ?

Hab es jetzt. Einfach update machen.