Unable to play both NES and SNES

Have you tried using ReiNX?

 

The same thing happened to me it worked before on atmosphere.
I updated both nes and snes and they go to a grey screen.

 

How'd you install the updates? In my experience, it only works installed via Tinfoil but that was because it was having issues on running (generic error code on launch)

 

could be wrong, but I heard this no longer works. I think it has to do with the account being used, officially that is.

 

I use SXOS and use SX Installer and use the layeredFS version and it works perfectly. The nsp version gives me black screen

 

If your account was linked using Kefir, it will not be compatible with newer versions of SNES and NES. It is recommended that you use homebrew emulators instead.

If your account is a legitimate eShop-linked account, these games should work just fine.

 

If you're that adamant, try using Linkalho.