You should either be online with no modifications/homebrew/cfw with your clean nand or offline with your unclean nand doing homebrew and the like. I don't know about stealth mode but 90dns is just changing your dns settings in the wifi settings appsorry guys,
yes on SX OS V2.5.2
i did make a clean nand backup with hekate
error code 2155-8035
and yes stealth mode is enabled.
do i have to disable stealth mode to set up 90DNS?
also if i install able nsp online for youtube to work even on banned consoles/ and hopefully unbanned consoles aswell, or shall i just stay away from this.