Nintendo has removed SmileBASIC 4 from the Nintendo eShop following reports of a Switch 2 jailbreak known as "ns2jb." The tethered, software-only exploit was published by developer and modder Sammy "pepsipu" Hajhamid, who says he used OpenAI's Codex to aid development.
The removal was reported by gaming outlets after the exploit became publicly discussed.
What the report says
The developer behind ns2jb describes the exploit as a "software-only" tethered jailbreak that runs on Nintendo Switch 2 firmware 23.0.1 and requires access to a specific version of the now-removed title.
According to Hajhamid, ns2jb permits execution of arbitrary native code, enabling homebrew applications, reverse engineering and modification of Switch 2 games, as well as backing up save files and accessing many Switch 2 peripherals through MMIO.
In journalistic terms: the developer stated the exploit can run unsigned code on Switch 2, allow researchers and modders to examine and alter game content, extract save data, and interface with hardware peripherals.
He further asserted that, to his knowledge, ns2jb is the first exploit of its kind publicly reported for Switch 2, and demonstrated capability by adding third-party characters (including cinnamoroll, Peter Griffin and Hatsune Miku) into the Switch 2-exclusive Mario Kart World.
Technical and practical context
Because ns2jb is tethered and software-based, it does not persist across power cycles; a reboot returns the console to its standard state and the exploit must be reapplied during the same session if needed.
Nintendo's only confirmed action so far has been the eShop delisting of SmileBASIC 4; the company has not issued a public statement regarding the exploit itself.
SmileBASIC's history as a development and hobbyist tool predates the Switch 2.
The title and its predecessors have been used by hobbyists and homebrew developers on prior Nintendo hardware generations.
During the 3DS era, community members similarly leveraged bundled programming environments to create and run homebrew code.
What remains factual
Verified details at this time are limited to the developer's public statements, the requirement for Switch 2 firmware 23.0.1, the reported dependency on a particular SmileBASIC title version, and Nintendo's removal of SmileBASIC 4 from the eShop.
Nintendo has not announced any further measures or timelines in response to these reports.
The removal was reported by gaming outlets after the exploit became publicly discussed.
What the report says
The developer behind ns2jb describes the exploit as a "software-only" tethered jailbreak that runs on Nintendo Switch 2 firmware 23.0.1 and requires access to a specific version of the now-removed title.
According to Hajhamid, ns2jb permits execution of arbitrary native code, enabling homebrew applications, reverse engineering and modification of Switch 2 games, as well as backing up save files and accessing many Switch 2 peripherals through MMIO.
In journalistic terms: the developer stated the exploit can run unsigned code on Switch 2, allow researchers and modders to examine and alter game content, extract save data, and interface with hardware peripherals.
He further asserted that, to his knowledge, ns2jb is the first exploit of its kind publicly reported for Switch 2, and demonstrated capability by adding third-party characters (including cinnamoroll, Peter Griffin and Hatsune Miku) into the Switch 2-exclusive Mario Kart World.
Technical and practical context
Because ns2jb is tethered and software-based, it does not persist across power cycles; a reboot returns the console to its standard state and the exploit must be reapplied during the same session if needed.
Nintendo's only confirmed action so far has been the eShop delisting of SmileBASIC 4; the company has not issued a public statement regarding the exploit itself.
SmileBASIC's history as a development and hobbyist tool predates the Switch 2.
The title and its predecessors have been used by hobbyists and homebrew developers on prior Nintendo hardware generations.
During the 3DS era, community members similarly leveraged bundled programming environments to create and run homebrew code.
What remains factual
Verified details at this time are limited to the developer's public statements, the requirement for Switch 2 firmware 23.0.1, the reported dependency on a particular SmileBASIC title version, and Nintendo's removal of SmileBASIC 4 from the eShop.
Nintendo has not announced any further measures or timelines in response to these reports.
