Homebrew Downgrade with ChoiDujourNX Error 2002-4315

[nsw]

I downgraded using ChoiDujourNX from 9.1.0 to 4.1.0 but now get error 2002-4315. I have a backup of the eMMC raw GFF when is was on 4.1.0 originally but did not backup the eMMC Boot0/1. Also I have backed up tsec keys and fuse and kfuse info prior to the upgrade to 9.1.0. What is the safest way to fix this error? I can get into heketa.

 

[matt.c]

i'm assuming you haven't burned any additional fuses since being on 4.1.0. I think you should have 5 burnt? Maybe consider the advice here? I can't post a direct hyper link because despite having an 10+ year old account, gba-temps automoderation thinks my account is suspicious

Google the thread on gbatemp "Switch won't boot after downgrade" posted by "Osga21"

 

[ZachyCatGames]

Some system save got fucked up, open your SYSTEM partition with hacdiskmount and delete everything in the save folder except 8000000000000120.