If you have b9s why do you use an emunand ?Xyphoseos, I need to make a backup of my sysnand or emunand ? I'm with boot9strap, godmode9 and luma (I follow the 3ds guide to update my old CFW with 2 separate nand and Rxtool to b9t on N3ds XL)
Just, the emunand take espace on sd card, do you want to keep your emunand or put it on your sys ?If you have b9s why do you use an emunand ?
If you want to be on emunand you must have by security a nand of both
If the error code appears on emunand, do an emunand backup
Do a nand backup
Format your 3ds with tinyformat (homebrew you can download it on fbi)
complet the initial setup
Go to setting
link your nnid
turn off your 3ds
Hold start on boot and go to gm9
restore the nand backup
done ^^