there is no mysteri gift
you dont
it's impossible
you must have a compatible access point and if you do and there is a live event on wifi you will get the gift
when an event comes up go to the place where there are hosting it and mystery gift should be in the menu whre you saved game is click mystery gift and you should receive the gift
you need a mystery gift
you can link together with all in mystery gift in Pokemon it depends in what version do you have^^
Once the Mystery Gift is activated, walk/run/bike to the nearest Poke-Mart. Once you walk inside, you will see a guy in green standing next to the counter. Walk up and talk to him. Once you're finished talking, he will hand you a package. If it's a Pokemon, the Pokemon will join your party. If it is a mystery gift where you're handed an item, like the Secret Key or Oak's Letter, your character will store it in the Key Items pouch of your bag. That's how you open the Mystery Gift.
first you go to the very first screen where it says to push start then you press start and it says mystery gift go to it and there you are
easy just get a wirless adapder
there is no mystery gift on platinum there is onlu Nintendo event downloads
it is NEVER too late mystery gift will last it will last until you die and when you have a child mystery gift will still be open. so now you know mystery gift will never end.