This tutorial is for those who don't want to update their system, but don't want to completely block Nintendo's net connection.
Atmosphere only, but you can also do it in your router's settings.

how to do:
1. If your NS has already downloaded the update package, you need to remove it. I recommend use goldleaf to do this: Goldleaf→console and goldleaf settings→firmware and updates→delete pending
2. Add the following to atmosphere/hosts/sysmmc.txt, if this file doesn't exist, create it. (If you want to implement it in emunand, add the following to emummc.txt instead of sysmmc.txt)

#system update
127.0.0.1 sun.hac.lp1.d4c.nintendo.net*system_update_meta*

3. Restart your NS.
4. Go to settings and try to update the system, if the dns setting is in effect, you will get a network error message.

This dns setting will only block the connection of the system update (If I'm not mistaken), you won't get annoying update alerts anymore, but you can still download games or play online normally.
If you want to disable it, just delete it or put a ; in front of 127.0.0.1.
This method may not work if you have enabled the proxy in NS's Internet settings.

References：
https://github.com/Atmosphere-NX/Atmosphere/blob/master/docs/features/dns_mitm.md
https://switchbrew.org/wiki/Network#sun

 

[HalfScoper]

Nice guide for sysNAND users I guess.
Then again there aren't any non-sigpatches-related homebrew that didnt get an update as of now, afaik.

 

[Milenko]

Eventually you won't be able to play online or access the eshop when they make the update mandatory though, takes a week or 2 after the update to kick in

 

[pokota]

I keep misreading the thread title as "here's how to update the Block System via Redirect DNS" which is a hilariously incorrect interpretation.

 

[UltimateFight]

Eventually you won't be able to play online or access the eshop when they make the update mandatory though, takes a week or 2 after the update to kick in

Yes, this method can only delayed the update for a short time, I mainly use it to wait for the atmosphere and some homebrews updates.

Post automatically merged: Oct 17, 2022

I keep misreading the thread title as "here's how to update the Block System via Redirect DNS" which is a hilariously incorrect interpretation.

Haha, I'm not good at English, this is the simplest title I can think of, maybe you can give me a better idea?

 

[pokota]

Haha, I'm not good at English, this is the simplest title I can think of, maybe you can give me a better idea?

"How to use the Switch's Hosts File to block System Update"

 

[UltimateFight]

"How to use the Switch's Hosts File to block System Update"

Thanks, It looks more formal. Unfortunately, I just found out that the title of thread can't be edit.