Gateway has released a new firmware: Gateway Ultra 3.5. But how to use the cheat function? Please read this post.
First things first, download the firmware from gateway official website
Step 1. Copy Launcher.dat into the root directly of built-in memory card. Install GW_INSTALLER.nds with Gateway Blue Card and enter into Emunand on the 3DS console.
Step 2. Copy cheats folder into the root of Gateway Red Card’s memory card. Each titleID.txt means a game, the name can be check online. Then download game from reliable source and copy the rom to memory card of Red Card.
Step 3. Boot into Gateway mode, press select button, the game menu will appear.
Step 4. Choose the game and press Y to run Cheat, just like the below picture
Step 5. Press direction button and A to enable cheats
Step 6. Press strat to load the game, then press A to play directly
Step 7. Craking successfully
Digimartz.com is an official seller, where you can buy reliable Gateway flashcard.