The question to really ask is, do you want it to have the extra features while risking function of your tamagotchi?
From my understanding, it's definitely not advised to debug at V3 because it tends to mess up the pixels and it won't work properly. Lower tamagotchi connection versions such as 1 and 2 tend to have a better chance at staying workable.
I do advise if you do debug, if it does mess your v3 up, you can undo what you did using a tissue or white eraser, very gently rubbing at the part on the microchip that says debug. Also keep in mind if you do debug rub with a pencil VERY gently or you could risk permanently debugging your V3.
Whatever you choose to do, there will be consequences. Some good...some bad...good luck!