Switch 2: first software jailbreak, ns2jb, works on firmware 23.0.1

Security researcher Sammy Hajhamid, aka "pepsipu", revealed a software jailbreak for the Nintendo Switch 2 called ns2jb on October 22, 2026. No hardware modification or modchip is needed: the exploit chains bugs in SmileBASIC 4, a Switch 1 app running through backward compatibility, and then in the console's filesystem service to run native code with elevated privileges. It targets firmware 23.0.1, the latest version when announced. The researcher says OpenAI's Codex helped, but the work still took about two weeks of effort.

The demo showed a modified Mario Kart World with characters not in the original game. A homebrew launcher, reported as HBLauncher v1.0.0, was then seen on October 23 running programs such as Doom and Super Mario Bros. According to reports, the exploit also allows game modding, save backups and filesystem access.

Major limits, and real risks

The jailbreak is tethered: it needs a computer and must be re-run after every restart. It stays in userland, with no kernel compromise or custom firmware, and no public demonstration of pirated games exists. SmileBASIC 4 must already be installed on the console, as the app was delisted about a day after the exploit appeared. As of October 24, no Nintendo update fixed the bugs, but a modified console can be detected online, with a risk of account bans. No official repository has been published: beware of fake sites claiming to distribute the tool. As this can change quickly, check your firmware version before anything else.

Image: photo "Nintendo Switch 2 – Tischmodus" by PantheraLeo1359531, CC BY 4.0, cut out, with a generated game scene and background, via Wikimedia Commons.

Source: Keengamer