Nintendo pulled SmileBASIC 4 from the eShop: what ns2jb can (and can't) do
After ns2jb was published, the programming game SmileBASIC 4 disappeared from the eShop. Nintendo has not explained why or commented on the jailbreak; the only public fact is the removal. According to Ars Technica, the game has already been delisted worldwide, but a Japanese demo that may work in a similar way was still available when the article ran. People who already bought the game keep it on their console. Ars also notes that in 2016 Nintendo did the same on the 3DS after a jailbreak tied to SmileBASIC.
What the exploit reaches
What ns2jb can do, according to its author (pepsipu): run homebrew programs, study and modify Switch 2 games, copy saves off the console, and reach most of the console's peripherals. He showed this by adding extra characters to Mario Kart World. What it is NOT: it is not CFW (a fully modified system), it gives no kernel access (the core of the system), it is tethered (needs a computer on the same network and is gone after a reboot), and it has only been demonstrated on firmware 23.0.1. In practice it is 'userland' access: programs stay stuck in a small, limited area. Ars believes this flaw will likely be fixed in upcoming firmware updates; that is Ars's expectation, not a Nintendo announcement.
Topics: ns2jb