It depends what kind of robot it is. If it's similar to a Protocol Droid, then it would upgrade its cerbos to require less oil, upgrade its languages, get itself reshined. If it's an impersonator droid, then it would require holographic upgrades. If it's a little cleaning droid, then the robot would need a new bag perhaps as it would vaccuum a lot of dust bunnies every now and then, and in my house, very long hair. ;)