I'm on 2.3.0, have not had any updates as I bout my system after 3.0.1 went live.
This means no SD update, no game updates ever yet, no DLC as I have never had access to eShop.
From my experience I can play BotW just fine, though no JP voice for me cuz that requires a game update.
However, I have my switch set up so it does not connect to the wifi network I gave it automatically.
To set that up I followed the instructions in the "
How to update games without updating your system" which gave steps on telling the switch not to auto connect to the network on its own as well as how to "clear" a system update already downloaded, which these two items I'll reiterate bellow myself.
Unfortuantly, I'll note now so no one gets to excited.
Updating game data only is no longer possible without a system update as that process on the Nintendo server side got a fix, and it now checks system firmware of your device.
When attempted, a pop up with instructions on how to update the sys firmware comes up.
Now if someone tries this anyway, that pop up only has "ok" at the bottom of it, don't panic that won't update your device, it only closes the pop up.
Anyway let's see if we can get you back up and running.
Forgive my newbieness but I'll go step by step as to what I've done to mine in hopes that any part of it might help you.
Upon first set up of the device, I let it connect to the net, luckily it can't "force" any update during setup, and I declined to link a ID to my profile as this also requires an sys update first.
After getting to the main home screen it wanted to apply the update it had downloaded during setup, I declined.
Following the steps in the thread I linked I turned "Connect Automatically" to the wifi I had set up, off.
- This is found in "System Settings → Internet → Internet Settings → Registered Networks"
- Push A on the Registered Network → Change Settings → Scroll down and change "Connect Automatically" to off → Save changes
- Exit out to home screen → Push & Hold power till the menu comes up → Power Options → Turn Off.
This should clear out any System update your device downloaded and prevent it from trying to download a new one, this will also prevent MarioKart8 from auto checking for an update for it's own game data.
If you are still getting these update prompts even after that there is a way to clear your system without losing saved data..
https://www.reddit.com/r/NintendoSw...to_factory_settings_without_losing_savegames/
I think this method maybe what
@AnalogMan was talking about.
Hope that helps, sorry if I gave you steps to things you've already tried.
~Istol.