I don't really think so. People have mentioned debugging but I have tried it and I ruined my tamagotchi doing this so do that at your own risk. I personally don't suggest trying to find out a way to make your tamagotchi older. Enjoy your tamagotchi.
For any Version of tamagotchi all you need to do is refuse the Matchmaker continuesly. She comes back alot of times. Keep in mind your tamagotchi will start over at generation 1 again. :lol: