Ntg5(w205) used product exchange?

[mmbrothers]

The ntg5(w205) is broken, so I'm going to exchange it for ntg5(x253).
What should I do after exchanging used products?

1.cp off?
2.flash?

 

[mpaavi]

Might be that you only need pin code for "new" unit.

 

[mmbrothers]

Might be that you only need pin code for "new" unit.

I solved the cp off. But the car's shape and setting don't match. If I do flash, which software version should I proceed with?