Nintendo has patched the first known jailbreak for the Switch 2 — firmware update 23.5.0, released Monday, shutting down the ns2jb exploit that relied on SmileBASIC and Civilization VII. The patch blocks filesystem access and native code execution on updated units. It’s live globally, and users who haven’t updated can still run modded games, dump titles, or boot emulated classics like The Legend of Zelda: Ocarina of Time on PC and Mac, but only if they stay on older firmware.
Update, and the door slams shut. <br><br>That includes the modded Mario Kart World demo shown running on Switch 2 hardware, now inaccessible to anyone who’s applied 23.5.0. The exploit had already seeded a wave of unofficial tools: translation layers, emulator wrappers, and game image dumps flooding forums and GitHub repos.
All of it depended on that one vulnerability, now neutered.<br><br>Nintendo’s official patch notes make no mention of security fixes. That’s standard. But community testers, including @OatmealDome and @SwitchTools, confirmed the block within hours of rollout. @SwitchTools noted Nintendo did not rotate its master encryption keys in 23.5.0. So physical cartridges remain dumpable.
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