Mileage function explanation:
1- load file (flash)
2- then input the km , if you already read the programmer file ,you load the MQB-LOCK(XXXX) ,then procedure upload this file to server
3- download file MQB-SERVICE-FILE-XXXXXX.bin
4- Device automaticly jump into write file procedure
5- if programmer write failed, you can choose the last option, load the MQB-SERVICE-FILE-XXXX.bin, write again.
I did mileage correction on 2 virtual clusters from Tiguan 5NA920791A (D70F3526) one 2016 other 2017 with VVDI Prog and this MQB activation.