Before writing a tuned file into the ECU, it is very important to proceed to a second read. In some cases, the manufacturer may have done an update on the ECU without the customer being aware of it.
The risks in a case like this are important:
The car won't be able to communicate via OBD.
Writing an obsolete file will cause the car to be useless (impossible to start)
ECU recovery will request the manufacturer's help.
The car warranty will therefore be nulled.