This is my experience about use Carprog v8.21 clone to do odometer correction on Skoda Yeti 2012 with nec&24c64 .
Let’s enjoy!
Tool preparation: CARPROG FULL V8.21( CARPROG FULL V9.31 is OK too)
Vehicle Model: Skoda Yeti 2012
Dashboard: nec&24c64
First Connect carprog with adapter and connect to Skoda.
Then open Carprog V8.21 software
Select DASHBOARD-> SKODA-> SKODA 2009-> DIAG V0.2
Select change KM
It will connect CAN
Reading mileage, just wait
Carprog read the Old KM value: 58112km
Then Input new value you needed and choose change KM to miles,such as:36105
Done! Carprog v8.21 change km SUCCESS!
Source:http://www.mileageprogrammer.com/carprog-v8-21-change-km-on-skoda/