What you need to do next is to dismantle the dashboard and find out the 8-feet chip to read the data, then select "M35XX" to write the mileage of dashboard.
The dash is very easy to change the mileage.
Thanks.
Source:http://www.mileageprogrammer.com/yanhua-acdp-set-the-mileage-to-0-on-fem-bdc/