Before continuing, you must follow the Movable Moveover guide to its completion
You can use 3ds_essential_dumper to obtain the movable.sed file from the source console if it is not fully functional
If you do not follow the Movable Moveover guide, some save data will not copy properly. If you do not want to transfer SD card data, this guide will not help you.
Section II - Prep Work
Follow these instructions on the source console only.
Power off your console
Insert your SD card into your computer
Rename boot.firm to luma.firm, if it exists
Copy 3ds_nandsave_dumper.firm to the root of your SD card
Rename 3ds_nandsave_dumper.firm to boot.firm
Reinsert your SD card into your console
Section III - NAND Savegame Dump
Follow these instructions on the source console only.
Power on the console
If you must use ntrboot because the console is not modded, you should perform ntrboot now
After a few seconds, the console should have booted into the 3DS NAND Savegame Dumper automatically
The script uses the top screen to show its status. If the top screen is broken, you will have to trust that the process completed successfully
The script will begin automatically after 5 seconds. Wait 1-5 minutes for it to complete
After the script completes, the console will power off automatically
Section IV - Transferring Files
Insert the source console's SD card into your computer
Copy the nandsaves folder inside the SD card to the Downloads folder on your computer
Eject the source console's SD card from your computer
Insert the destination console's SD card into your computer
Copy the nandsaves folder from the Downloads folder on your computer to the root of your SD card
Reinsert the destination console's SD card into the destination console
Section V - Data Transfer
This process will overwrite all current NAND savegame data. A backup will be made at /gm9/out/data if you follow the instructions properly. For additional protection, you may want to create a NAND backup for the destination console before following this section.
Follow these instructions on the destination console only.
Hold Start, and while holding Start, power on your console
Your console will have booted into GodMode9
Navigate into the [0:] SD CARD drive, then enter the nandsaves folder
Press Y on the 32-character ID (known as the "ID0")
Press B to go back to the main menu
Navigate into the [1:] SYSNAND CTRNAND drive
Press R+A on the data folder
Select "Copy to 0:/gm9/out" to make a backup of your current NAND savegame data
If you see "Destination already exists", press A on "Overwrite file(s)"
Once this finishes, press A on the data folder to enter it
Press Y and select "Copy path(s)" to paste the savegame data from your clipboard
Press A to unlock SysNAND (lvl1) writing, then input the key combo given
Select "Overwrite file(s)" in the prompt that appears and wait for it to finish