mmn
In the guide there's a mention about stuff that gets written to the NAND and stuff that gets written to the SD. Would stuff like the latest smash bros update fall under the SD ones?
If the above is correct would it be possible to get to the eshop through a "still linked" emunand, download the patch and then get back to an unaltered 9.2 NAND (mainly so I don't lose the save after going through downgrade)? My reasoning is that since Sysnand and Emunand are still linked whatever files I download should still be readable in either version, but I'm concerned that I might be missing something key in the whole process.
I've tried something like that before.
I downloaded some of the picross games (bought and downloaded from eshop) on a linked emunand.
When I switched back to sysnand, they didn't show on the home screen, but they showed in data management with little 'x' symbols on their icons. So it didn't work for games, but you can still try and see if it'll work for an update.
Regardless, you'll still probably lose your save when you downgrade if your smash game is retail.