If SaltFW gave you black screen with a renamed folder, your CTRNAND is most likely, somehow, broken. Can you dump a minimal version of it with Decrypt9WIP and upload it somewhere? (It'll be like 1GB~)So, I will bump the thread so it can come back to first page and get some visibility.
I tried to create an EmuNand and inject a Nand on it : I can't boot.
I also tried almost all of my backups on the SysNand : Nothing.
The last backups I did not try on the Sysnand are the Pre-A9LH ones. But since they were not booting on the EmuNand, I don't want to lost my A9LH entry without anything.