is not true, i has a console bricked, only works hekate, i try many tutorials from sthetix unbrick level 1,2,3,nothing repair, at that time he has a unbricklevel 4 , this tutorial consist create a emunand from a donor nand with our keys ofcourse, this switch revive from dead with this method. only work emunand.To add to Hayato123's answer: no, you cannot run emuEMMC without a working, physical eMMC inside the switch.
NOW 2023 IM looking for this video again because i have againn a nintendo bricked only work hekate!!