Nintendogs Progress Reset on R4i Flashcart: Not Possible Via Card

You cannot erase Nintendogs save data via the R4i flashcart. The R4i only loads ROMs — saves are stored on the DS/DSi/3DS internal NAND, not the card.

How Nintendogs Saves Actually Work

• Save Location: Console system memory (NAND) — separate from game cartridge/ROM.
• R4i Role: Provides game code (ROM) — does not manage saves.
• Save File: Created by console when game runs — typically SAV or NDS.SAV in system NAND.

To Reset Nintendogs Progress

1. In-Game: Main Menu → “Delete Save Data” / “Start New Game” — if option exists.
2. System Settings (DSi/3DS): Data Management → Nintendogs → Delete.
3. Original Cartridge: Hold X + Y + A + B + L + R at startup (some games) — Nintendogs may not support.

Legal & Ethical Note

R4i is often used for piracy. If you own a legitimate Nintendogs cartridge, use that. If playing a ROM, you should own the game. Save manipulation on pirated copies is still piracy-adjacent.

Use the console’s built-in save management — it’s designed for this.