this is blocking connections to Nintendo's servers. You can't update if you do this, but you don't WANT to connect to Nintendo's servers if you're hacking your Switch.
seriously does this ONLY have auto-save? How do you manually save??
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ok no there HAS to be a way to manually save, because you can disable autosave, and then what??
EDIT: turns out if you quit to main menu, it saves the game.
yeah it doesn't let you edit items in your inventory from Switch saves; or edit the Profile data, so no gold keys or bank item editing. but the dev is working on it!
but it's the UK version base only, so MGS1 is the UK version which has minor differences, and the USA-exclusive "VR Missions" doesn't work. North American Pack is apparently DLC? and Japanese Language Pack is also DLC, so Integral doesn't work either.