Every time it tune my ECU

[Edain]

At the moment I don't have any tunes on my ECU,

I only have the launch control options on my ECU,
Here the question, if I want to activate the SWAS option and reinstall it.
I get a message saying that Versatune is already in my ECU, do I have to revert back to my stock tune to reapply the change?
Thanks for your help!

[Ugnius @ VersaTune]

Either revert back and reinstall with the SWAS option enabled or just flash any prebuilt tune.