I downgraded my switch to version 5.1.0 with a Nand backup and then I wanted to upgrade to 6.2.0. I started hekate with my Nand backup and restored my Nand, then I went back to the hekate start menu and pressed restart in rcm mode, my console didn't do anything after that. my PC didn't react on my switch anymore when I connected it to the cable and my switch only show a black screen.