Downgraded Switch FW, Won't boot up into stock or custom FW

what firmware are you in? if in 6.2 then just follow blahblah's instruction on the other thread. It worked for me.

 

The way I did it was to update to 6.2 using the switch update(could be risky since you're connected to nintendo server). I then followed blahblah's direction by putting the patch files in the atmos folder along with hbl.nsp on the atmos folder as well. I then pushed the fusee primary bin to switch.

 

Your fuse was burned from the OFW 6.2 update. That’s why your switch won’t boot up. You have to use CFW for your switch to boot now. You should be able to boot using Hekate then updating back to 6.2. If I’m wrong someone here will chime in.

 

Just restore your NAND backup.

 

Hopefully you made a backup of your nand before downgrading. Or did you downgrade by using your nand backup of 5.1 and this is what left you in this predicament.

 

Then you should be able to (if I’m not mistaken) boot into hekate. Then Boot OFW from launch menu. If your switch boots, then update back to 6.2 and Then use the new Atmo.

 

Well hopefully someone with a little more knowledge can jump in and give you a hand.

What exactly was the steps you used to restore your nand?

 

Restored your 5.1 backup over 6.2 with burnt fuses. Check fuse count should be 8 I believe.

You did restore both BOOT0/1 and rawnand correct?

Also if you didn’t have exfat drivers when you made your nand backup they won’t be there now and could be causing some issues. Wouldn’t hurt to try a different card formatted to Fat32, shouldn’t be the case but you never know.