H&S Performance Update: How to Update Your Mini Maxx V2

Preparing for the H&S Performance Update

Before you begin, gather the necessary tools:

• A Windows PC with a free USB port
• The USB adapter included with your Mini Maxx (or a micro-SD card slot on your PC)
• The SD card from your Mini Maxx V2 tuner
• A battery charger capable of supplying at least 10 amps (highly recommended)

H&S Performance Update: Step-by-Step Instructions

Step 1: Preparing the SD Card

1. Remove the SD card from your Mini Maxx V2.
2. Connect the SD card to your Windows PC using the included USB adapter or your PC’s built-in SD card slot.
3. Crucially, ensure your SD card is named precisely “MINI MAXX” (without quotation marks). If using a new SD card, reformat it to FAT (not FAT32 or exFAT) and rename it accordingly.

Step 2: Updating the SD Card

1. Download the latest H&S Performance update file (zipped folder).
2. Extract the contents of the zipped folder.
3. Open the updater software. If you encounter an error regarding connecting the MMV2 drive, double-check the SD card connection and restart the updater software.
4. Allow the updater to download the necessary files and update the SD card. Eject the SD card when prompted.

Step 3: Updating the Mini Maxx V2 Tuner

1. Insert the updated SD card into your Mini Maxx V2.
2. Power on the tuner.
3. Navigate to the Menu, scroll down, and select “Update Firmware.”
4. Allow the tuner to update and reboot.

Step 4: Updating the Tune on Your Truck

1. Connect the updated Mini Maxx V2 to your truck’s OBD-II port.
2. Power on the tuner. Verify the correct vehicle is selected. If not, change it using the “Change Vehicle” option in the menu.
3. To reflash the PCM, go to the Menu and select “Install Download.”
4. Follow the on-screen instructions to load the new tune file.

Important Considerations for the H&S Performance Update

• Battery Charger: Always connect a battery charger (minimum 10 amps) when flashing the PCM to prevent voltage drops that could interrupt the process and potentially damage the PCM.
• File System: A “missing SD card” error indicates an incorrect file system. Ensure the SD card is formatted as FAT.
• Missing Files: Errors about missing files usually mean the update files weren’t copied correctly to the SD card. Ensure you copied the contents within the extracted folder, not the folder itself.
• Version Number: A known bug prevents the version number from changing after the update. This will be addressed in future updates. The priority is delivering updated tune files.

This completes the H&S performance update process. Enjoy the enhanced performance and new features! If you encounter any issues, refer to the official H&S Performance support documentation for troubleshooting assistance.