You might be able to downgrade the 3DS firmware

But you’ll have to register on a forum. If it doesn’t work, you might brick your device though. But there’s a custom firmware to play borrowed 3DS games.

Let’s see if I can brick my 2DS. I want to boot the homebrew launcher without opening Zelda. If the menuhax works, you can hold L while booting, and it’ll go to the homebrew launcher. Don’t care about playing borrowed 3DS games.

I found the firmware on a blog, that doesn’t require a login. Search Google for “[MEGA] [CIA/BIN] MSET 4.X & 6.X backups, Browser backups, Update packs (All Regions)” with the quotes.

Downloaded the wrong file. I need U, not E.