Mb w212 2011 mileage

[eprst]

Hi, please help to solve the mileage problem. I've changed mileage and assist+ , in the dashboard and on the diagnostic Star shows the new one. But when I do the new technical assistance it shows the old mileage again in assist+. I've found the old mileage in dump, but when I change it and return to the car it shows the old one again. Where does it take the old mileage from? Should I check the CS? Or does it come from ECU?
Thanks in advance.
Kind regards

[eprst]

add dumps ori and mod

[eprst]

Please help

[eprst]

Where does W212 assist take the mileage from? For the next service

[diagtech]

Just a guess but might be in cgw