(you could have quoted your post for the lazy ones )Maybe I should've posted this here https://gbatemp.net/threads/3ds-noob-paradise-ask-questions-here.359035/page-1640#post-6877466 don't mean to double-dip in posting or anything. Just not really sure where would be the most effective. I saw this thread: https://gbatemp.net/threads/tutorial-pokemon-sun-and-moon-on-gateway.450213/ but he's injecting private/public headers and previously I was able to rip them straight from the cartridge when doing a dump via the menu so that's not what I'm looking for either!
Why can't you access the Gateway menu anymore? Are you using the right key combo for that (it changed from just L to L+SELECT at some point)?