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On October 23, 2026, modder "pepsipu" used OpenAI's Codex to complete a Switch 2 jailbreak called "ns2jb," and demonstrated running a custom version of Mario Kart World with new characters added, including Cinnamoroll, a red Angry Bird, Peter Griffin, and Minecraft's Steve. Reports say the hack is a software-only jailbreak that requires an internet connection, and it must be launched from the game SmileBASIC 4 each time the console is powered on to take effect; another modder said the game is "not strictly required." There have been no subsequent developments with supporting evidence so far.
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Modder completes Switch 2 jailbreak with the help of OpenAI Codex
Source:The Verge AI
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Oct 23
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Solidot
Switch 2 jailbroken, can run homebrew
Researcher Sammy Hajhamid exploited a 32-bit integer overflow vulnerability in SmileBasic 4 to jailbreak the Switch 2 and demonstrated running homebrew. Using OpenAI's Codex to probe the SmileBasic interpreter, he spent two weeks discovering the vulnerability, thereby gaining arbitrary read/write access. SmileBasic 4 has been removed from the Switch eShop, and the vulnerability may be fixed in a subsequent firmware update.
t3nRelated discussion
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This post contributes to heat; it is not a formal report or confirmed fact.
The Verge AI
Someone cracked the Switch 2 using an old game and AI
The Nintendo Switch 2 is said to have been cracked; the modder "pepsipu" used OpenAI's Codex to complete a jailbreak called "ns2jb" and demonstrated running a custom version of Mario Kart World with new characters such as Cinnamoroll, a red Angry Bird, Peter Griffin and Minecraft's Steve. The crack is a pure-software, internet-required jailbreak that must be launched from the game SmileBASIC 4 on every boot to take effect, and another modder says this game is "not strictly necessary."
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