David, I'm not sure what you're expecting but the X-part software just looks at the existing 116ps tune assembly number then automatically loads the 135ps tune assembly
There's no interface or options once you put in the unlock code it operates exactly the same way as using normal disc to write or rewrite the tune to the ECU
The only thing it does when it's loaded the upgraded tune is that it changes the ZCS codes so when in future T4 will recognise that it has been upgraded.
Russ