Dealer visit, can I just swap my ECU?

[jnmarshall]

I have to visit the dealer for a seatbelt replacement. The first thing they do is plug in their scan tool to check the vehicle in. So I need to return to stock.
Can I simply replace my ECU with the original factory one? Or do I need to unmarry the I3 from the unlocked ECU first before swapping?

[mikel]

yes, you can simply swap it back in.