3DS:MSET9 fresh

This page is for resolving the "System Settings loading infinitely after reinserting the SD card" error when trying to install MSET9. This page hashes out the troubleshooting steps located here and will perform a fresh install with either a spare SD card, or your original SD card which has been backed up and formatted to avoid issues with your current install causing MSET9 to not work properly.

Before continuing please ensure you are choosing the right model (old 3DS, old 3DS XL, old 2DS vs New 3DS, New 3DS XL, New 2DS XL) and correct system version.

Also please make sure you are installing/injecting AFTER ejecting from the extra data screen and not before.

Instructions
Assuming your 3DS is stuck at the extra data screen with a spinning circle:


 * 1) Force power off your console by holding the power button down for 15 seconds.
 * 2) Eject the SD from your console and insert into your PC.
 * 3) Load mset9.bat (if windows) or mset9.py (if linux) or mset.command (if mac).
 * 4) Choose model then press 3 to remove MSET9 and then press enter to close the script.
 * 5) Choose option below based on if you have a spare SD card or not.


 * -|Spare SD Card=


 * 1) Eject the original SD card from your PC
 * 2) PUT YOUR ORIGINAL SD CARD AWAY
 * 3) Insert your spare SD card into your PC
 * 4) Format the spare SD card as FAT32 (Do not copy your data back to the card yet)
 * 5) Insert the formatted, blank SD card into your console
 * 6) Return to Section I Step 1 of the MSET9 Guide.
 * 7) After Luma3DS installs and your console boots to the homescreen, power it off and switch to your original SD card for Finalizing.


 * -|No spare SD card=


 * 1) Backup your SD card to a folder to your PC (especially the Nintendo 3DS and DCIM folders)
 * 2) Double check that you properly backed up your data
 * 3) Do not skip the previous step
 * 4) Format the SD card as FAT32 (Do not copy your data back to the card yet)
 * 5) Insert the formatted, blank SD card into your console
 * 6) Return to Section I Step 1 of the MSET9 Guide.
 * 7) After Luma3DS installs and your console boots to the homescreen, power off your console
 * 8) Eject the SD from your console and insert into your PC
 * 9) Format the SD card as FAT32 again
 * 10) Restore your backed up folders to the SD card and continue on to Restoring / Updating CFW to ensure you have Luma on your SD card, and then continue onto Finalizing.