Take your modified hexstring from the CCC_Data Section from any Ford AsBuild File into the box (open your .ab File with notepad). Look in the CCC_DATA for the Byte begin with "FC....". The next 254 Byte from "FC...." paste to the textbox. Now klick the "Send" button. Now the checksum is correct and you can use your new AsBuild for programming into the car.Copy and paste the second Box :)