3DS:MSET9 fresh

If you are experiencing the "System Settings loading infinitely after reinserting the SD card" error when trying to install MSET9 using the MSET9 CLI or MSET9 Play Store guides, this page will help you resolve that issue by either swapping to a spare SD card or backing up and then formatting your original SD card.

All of your original games and saves will be kept intact if you follow the steps properly.

Before starting this guide, please ensure the following two things:

1. You have chosen the correct model type (New vs. Old) and system version in the MSET9 setup.
   • New models have four shoulder buttons (L+ZL+ZR+R and the C-Stick directly above the Y button - old models have two shoulder buttons (L+R) and no C-Stick.
2. You injected MSET9 in Section II Step 10, not any earlier.
   • If System Settings is stuck because you injected too early (such as in Section II Step 5), just follow the instructions for removing MSET9 and then restart from the beginning of Section II. You do not have to swap out or reformat your SD card in this case.

Instructions

Follow these steps first to remove MSET9:

PC (CLI)Play Store

1. Power off your console
   • If the console is infinitely loading on the extra data screen, forcibly power it off by holding down the power button for 15 seconds
2. Insert your SD card into your PC
3. Run the MSET9 script:
   • Windows: Double-click mset9.bat
   • macOS: Double-click mset9.command and enter your password if prompted
   • Linux: Open a Terminal window, cd to the root of your SD card, then type python3 mset9.py and press ↵ Enter
4. Choose your model and version, enter 3 to remove MSET9, and then press ↵ Enter to close the script
5. Proceed to the Spare SD Card tab below if you have a second SD card on hand, or to Original SD Card if you only have your current SD

1. Power off your console
   • If the console is infinitely loading on the extra data screen, forcibly power it off by holding down the power button for 15 seconds
2. Insert your SD card into your phone/tablet/computer
3. Run the MSET9 Installer application
4. If Remove MSET9 is not highlighted:
   • Tap on Select "Nintendo 3DS" Folder, then navigate to sd:/Nintendo 3DS folder on your SD card
   • Once inside the Nintendo 3DS folder, tap on Use this folder, then Allow if asked
5. Tap Remove MSET9
6. Proceed to the Play Store SD tab below

Spare SD CardOriginal SD CardPlay Store SD

1. Eject the original SD card from your PC
2. Put the original SD card away.
   

   Do not use the original SD card at all until after CFW is installed, or else the error is likely to keep happening.

3. Insert your spare SD card into your PC
4. Make sure that this SD card is the spare and not the original
5. Format the spare SD card as FAT32
   

   Do not copy your data back to the spare SD card until after CFW is installed, or else the error is likely to keep happening.

6. Insert the formatted, blank SD card into your console
7. Return to Section I Step 1 of the MSET9 CLI Guide and complete every step until the bottom of the page.
8. After Luma3DS installs and your console boots to the HOME Menu, power off the console and switch to your original SD card before continuing to Finalizing Setup

1. Backup your SD card to a folder to your PC (especially the Nintendo 3DS and DCIM folders)
2. Make sure that your data is correctly backed up before formatting
3. Format the SD card as FAT32
   

   Do not copy your data back to the SD card until after CFW is installed, or else the error is likely to keep happening.

4. Insert the formatted, blank SD card into your console
5. Return to Section I Step 1 of the MSET9 CLI Guide and complete every step until the bottom of the page.
6. After Luma3DS installs and your console boots to the HOME Menu, power off your console
7. Eject the SD from your console and insert it into your PC
8. Format the SD card as FAT32 again
9. Restore your backup to the SD card and follow Restoring / Updating CFW to ensure you have Luma on your SD card, then continue to Finalizing Setup.

Android phones and Chromebooks cannot format SDs correctly. As such, this method only works if you have a spare SD card that is already formatted to FAT32. If you do not have a spare SD card that is formatted to FAT32, you will need to use one of the other two methods in this section. Tip: All SD cards that are 32GB or smaller are FAT32 by default.

1. Eject the original SD card from your phone/tablet/computer
2. Put the original SD card away.
   

   Do not use the original SD card at all until after CFW is installed, or else the error is likely to keep happening.

3. Insert your spare SD card into your phone/tablet/computer
4. Make sure that this SD card is the spare and not the original
5. Delete everything from the SD card
   

   Do not copy your data back to the spare SD card until after CFW is installed, or else the error is likely to keep happening.

6. Insert the blank spare SD card into your console
7. Return to Section I Step 1 of the MSET9 Play Store Guide and complete every step until the bottom of the page.
8. After Luma3DS installs and your console boots to the HOME Menu, power off the console and switch to your original SD card before continuing to Finalizing Setup