How to change Nintendo Switch background without a homebrew channel?

My question:

There's the so-called homebrew channel on various consoles, which enables a lot, such as changing the background.

Is it very time-consuming to install the homebrew channel?
Many Nintendo Switch consoles that have him have been banned.

Is there any way to change the background without having this program on top? Is there a legal method?

But now, after a few years, Nintendo could really bring out the official background.

If it doesn't work officially, you have to do it homebrew. But if you don't want to do that (which I can understand) then unfortunately it won't work.

OK