Hacking nand - what does it do? do I need to back it up?

[_dan_]

As the title says really. I currently have a 3ds XL (running 4.5) with a r4i gold deluxe edition.

Do I need to do backup? What does it do?

 

[Luigi2012SM64DS]

NAND is the internal memory of the 3DS. It only needs to be backed up if you plan on doing something risky.
Thats all you need to know.

 

[hashcheck1]

NAND - Stores 3DS System Firmware(software). Eshop Purchase Tickets etc I needs to be backed up especially at 4.x as its the only exploitable firmware on the 3DS

 

[Duo8]

As the title says really. I currently have a 3ds XL (running 4.5) with a r4i gold deluxe edition.

Do I need to do backup? What does it do?

If you back it up, you can restore it if something went wrong.