Digimon Twin debugging

To enable debugging in the Digimon Twin, do the following

This is how the board should look like after enabling debug mode

• Solder the DB pad.
• Press A + B + C + Reset, and keep holding A + B + C until the sound ends.
• Press A on the BANDAI logo screen.
• Press A to select the Digimon you want, then press B to confirm.
• After the egg hatches, you will obtain the selected Digimon.

Credits

joushiikuta for discovering this.