save the title key cmd output to a txt for later and post the command you typed for the nax0 stuff (without your sd seed ofc) because you probably typed it wrong
dm me the console output and i'll take a look
alright so i had to help someone else out with this. your.keys (now named prod.keys in the guide) should be the hactool keys file, with master keys and stuff. i can't give it to you on this forum.
you can't. all of the octo expansion files (apart from some text) are loaded from the 2 gb dlc. however you can load the dlc through layeredfs (i did post a poc video somewhere on gbatemp)
https://gist.github.com/khang06/84aabeac507fa99a676d22bb6120cea8
i wrote it all in markdown so...
https://gbatemp.net/threads/nintendo-switch-sd-to-nsp-dumper.514816/ for an automated way to do this