Exactly. Just make sure to press B when you get the egg. If you press anything else, you're stuck with the egg. And make sure it's on download. Not restart--that's bad!!!
i will explain,what u do is when u get your new battery put it in,then u will heer a loud bbeeeeeeeeeeeeepppppppppppp!!!!!!!!!!!an u will c an egg,then u press b and it will say download and reset,and what u do is scroll down with the button furthest to the left,and press b(b is the middle button!)
if you press download, you go back to the last major event... matchmaker coming, waking up, connecting with another tamagotchi, your tama pooping and stuff like that. to download, when the egg comes up you MUST press B, if you wait the egg will hatch and it will be too late!