Fire Emblem The Sacred Stones: cart with Jump Festa downloads

How obtainable is a Fire Emblem: Seima no Kouseki cartridge that contains the event items?

To elaborate further: This game has several items (Shadowkiller, Beacon Bow, Fiendcleaver, Bright Lance, Juna Fruit) that were only available in the Japanese version, to attendees of Jump Festa, and have since been lost in their original form. I don't know whether anybody has backed up the save file to another medium, or recreated the event's intended effect through hacking.

Merely obtaining the items with a cheat device may not be accurate behavior. Assuming the event adds them to a special menu in a similar manner to the Mario Kart Double Dash bonus disc for USA FE7.