Updating wii firmware without internet
Step 10) Hit 'Confirm' Step 11) Press 'B' to save Follow this guide by Tgames of GBATemp about blocking auto-updates via a proxy server.
This will work, however it requires that a computer always be on.
You'll have to connect your Switch to wi-fi initially in order to change the network settings.
As long as you've disabled automatic system updates, you won't accidentally download any unwanted firmware updates.
This will block your Switch from pinging Nintendo to check for updates.
Thanks to Switch Hacks for this helpful bit of information.
After shutting off his console in the middle of the massive update, he found that he was unable to reset or reverse the damage.
If you go into internet settings, the option to enable/ disable is below the 'View Mac Address' button.
As soon as you connect your Switch to wi-fi, it will be set to check for updates, which will send you annoying notifications whenever your Switch needs an update.