Creating a NAND backup is the single most important safety measure for a modded 3DS. It allows you to roll back your system to a working state if something goes wrong.
Because NAND operations modify the internal memory, they carry a risk of "bricking" the console. GodMode9 Usage - 3DS Hacks Guide 3ds nand download install
: Turn off your 3DS and put the SD card into your computer. Go to the /gm9/out/ folder. You will see files ending in .bin (your NAND) and essential.exefs . Move these to a safe place , like a cloud drive or an external hard drive. Creating a NAND backup is the single most
Copy this file immediately to your computer, an external hard drive, and a cloud backup service. Keep it safe. Without this file, your unique console encryption is lost forever. GodMode9 Usage - 3DS Hacks Guide : Turn
Once in GodMode9, you’ll see a file browser. Press the (Home) button to pull up the main menu.
Before we dive into the installation process, let's quickly explain what NAND is. NAND (Not AND) is a type of flash memory used in the 3DS to store data. It's similar to a hard drive on a computer, but much smaller and more compact. The NAND chip on the 3DS stores the console's operating system, games, and other data.