switch not updating

[yasay]

hello.I recently updated my switch V1 with the latest firmware20.20 (atmosphere hekate.sigpatches ) everthing work correctly
But when i want to update the stock firmware with system update an erreur occur :
code error 2137-8007
my stock firmware is 20.1.0.It's the first time i see an error like that.
How can i solve this problem,please help

 

[thesjaakspoiler]

It seems to be a DNS error.
If you have manually set a DNS server, the server might not exist anymore.
You should be able to just change that in your network settings in the normal settings menu.

 

[yasay]

can you please give the right DNS