Uppgraderad bil/Upgraded car

Min bil har blivit uppgraderad. En krånglande växellåda har utrustats med ny mjukvara.
Det hade varit roligare om den hade uppgraderats från Opel Corsa till Opel Astra...

My car has been upgraded. A troublesome gear box has been furnished with new software.
It would have been much more fun if it had been upgraded from an Opel Corsa to an Opel Astra....