Use your Apple Silicon Mac to set up ns2jb on a Switch 2, then open homebrew tools from the same app. This is experimental: finishing the keyboard transfer alone does not mean the exploit worked.

Set up 90DNS on the Switch 2 before testing. It helps block Nintendo updates that could stop this setup from working.

1. Open System Settings → Internet → Internet Settings. Select the network connection used for testing, choose Change Settings, and set DNS Settings to Manual.
2. Enter the IPv4 DNS addresses for your region:
   • North or South America: Primary 207.246.121.77; Secondary 163.172.141.219.
   • Anywhere else: Primary 163.172.141.219; Secondary 207.246.121.77.
3. Set both primary and secondary IPv6 DNS to ::, as described in the linked guide. Save the settings and reconnect to that network.

90DNS can also block eShop, Nintendo Switch Online and other Nintendo services. Check the current guide and verify it works on your network. It cannot guarantee protection from updates: cached addresses, other networks or changed services can bypass it. The :: setting may be unsuitable for IPv6-only networks. This protects software versions; it does not make the exploit safer or more reliable.

• An Apple Silicon Mac running macOS 14 or newer.
• A Switch 2 on system software 23.0.1 with SmileBASIC 4.4.9 and more than 20 MiB free in its save.
• A USB-C cable that supports data, not just charging.
• The Mac and Switch on the same local network. Ethernet is likely required for the Switch 2. Wi-Fi has not yet been verified; use Ethernet for now.
• On the Switch, set System Settings → Controllers & Accessories → USB Keyboard to US English. The Mac's keyboard layout does not change this requirement.

The bundled USB driver is unsigned. Your Mac's SIP and startup-security configuration must permit unsigned kernel extensions before you can use mac2jb.

Already have the driver working with a partial/custom SIP setup? Keep that working setup. Otherwise, follow these steps.

1. Shut down your Mac.

2. Hold the power button until Loading startup options appears.

3. Select Options → Continue. Authenticate with an administrator account if asked.

4. Open Utilities → Startup Security Utility. Select your startup disk and click Security Policy.

5. Select Reduced Security.

6. Tick Allow user management of kernel extensions from identified developers.

7. Confirm the changes, authenticate if asked, and close Startup Security Utility.

8. Open Utilities → Terminal and enter:

   csrutil disable

9. Follow the confirmation and administrator prompts. When it confirms the change, choose Apple menu → Restart.

10. Back in macOS, open Terminal and enter:

    csrutil status

    For this setup, confirm it says System Integrity Protection status: disabled. An existing working partial/custom setup can report a different status.

1. Download mac2jb v0.4.3 for Apple Silicon, extract the ZIP and open mac2jb.app.
2. If macOS blocks the app, open System Settings → Privacy & Security and choose Open Anyway if offered. Open mac2jb again.
3. Click Install & load driver… and approve the administrator prompt.
4. If macOS asks for approval, open System Settings → Privacy & Security and click Allow for the driver.
5. Accept the restart prompt or choose Apple menu → Restart.
6. Reopen mac2jb and wait for the driver check. Continue only when the driver is loaded and no driver-install restart is pending.

Once installed, refresh its status instead of reinstalling it to check. Each installation creates a new restart requirement.

Disabling SIP reduces macOS protection. mac2jb does not change it for you. Fully re-enabling SIP after installing this unsigned driver has not been verified and may stop it working after a later kernel-collection rebuild. See Apple's policy and SIP documentation.

The old bootstrap.bas from previous mac2jb releases using pepsipu's original ns2jb has a nine-argument START. It will not work with this version or any future mac2jb release and must be replaced.

The bootstrap is the small program saved in SmileBASIC as NS2. Use the bundled kurumuz version, which has five-argument START(PORT,A,B,C,D). Save it once using these steps:

1. Connect the Mac and Switch with the USB-C data cable.
2. In SmileBASIC, open Make a Program with an empty editor.
3. In mac2jb, select Type bootstrap only, the first option. If using the demo, tick I’m using the SmileBASIC demo immediately below it. Leave it off for the full game; the app remembers your choice.
4. Start typing and wait until it finishes, usually about 7–10 minutes.
5. Press X to return to Direct mode and save the program with the commands below. mac2jb shows a prompt but does not save it for you.
6. After saving, confirm the prompt in mac2jb and return to the start screen.

With the bootstrap in slot 0, press X to return to Direct mode and save it with:

SAVE "NS2"

The normal load command is LOAD "TXT:NS2". mac2jb sends it and confirms loading for you when you start a GUI exploit run.

Press X to return to Direct mode, then enter these two save commands in order:

PRGEDIT 0
SAVEV "TXT:NS2", PRGGET$()

With the demo checkbox enabled, mac2jb loads it using this one line:

PRGEDIT 0:LOADV "TXT:NS2" OUT C$:PRGSET C$

Demo loading does not use the full game's extra confirmation Enter. The same bundled bootstrap works for both editions. Manual demo save/load is confirmed; automated demo loading still needs a console test. The terminal launcher uses the full-game route; demo automation uses the GUI checkbox.

1. Restart the Switch, open SmileBASIC → Make a Program and enter Direct mode.
2. Select Held RPC in mac2jb. It is the second option and selected by default. This keeps the connection open for all the homebrew tools below.
3. In Ready Check, select the Mac's IPv4 address on the network shared with the Switch. This picker is for the Mac, not the Switch. Refresh and reselect if it changes. USB controller and timing settings are also in Ready Check.
4. Check the SmileBASIC demo checkbox matches your edition, then start the run.
5. Keep SmileBASIC focused and the cable connected. Wait for 4/4 verification and confirmation that RPC is open before opening a homebrew tool.

The homebrew list appears directly below Held RPC. The optional tasks are below that list. The four choices are numbered in this order:

Saving NS2 saves only the program text. Restart the console and run the exploit again each time; a saved bootstrap does not preserve a live connection.

Every tool here requires a fresh Held RPC run with 4/4 verification. Use the Homebrew requires Held RPC section directly below Held RPC. Keep mac2jb and SmileBASIC open, and choose only one tool per session. No Pico is needed.

• HBLauncher v0.2.0: click Launch HBLauncher to open its GPU app menu. For ftpd-sb v0.1.0, select Refresh, open ftpd-sb and press A. It uses FTP port 5000; see the ftpd-sb guide.
• OunceCake: enter the Switch's IP in Switch IP address, then click Open game list. Choose your game and click Start FTP. Wait for Game files are ready, then connect to the Switch's IP on port 2121 using anonymous, passive FTP and Binary/Image (TYPE I) transfers. This is a different IP from the Mac's address picker. It exports your own games' unencrypted content, not NSP/XCI packages or keys. See the OunceCake guide.
• Stremio: install Stremio on the Mac, then click Launch Stremio. The Mac handles media playback for the Switch; leave the addon field empty for account addons or the bundled 30-second sample. Playback is confirmed; account library and watch-sync still need live verification. Torrents and subtitles are unsupported. See the player guide.

1. In mac2jb, click Open session logs. In Finder, open vendor → HBLauncher → apps.
2. Copy the complete prebuilt app folder there, with its manifest directly at apps/my-app/app.json. Keep the package's other files together.
3. In HBLauncher, select Refresh, select the app and press A or tap its row.

The current library is at ~/Library/Application Support/mac2jb/Sessions/<session-id>/vendor/HBLauncher/apps/. Reopening mac2jb creates a fresh library. Keep your original app packages elsewhere and copy them into the new library. See app compatibility and details.

Disconnect any FTP client, then choose Finish session. Wait for cleanup and restart the console before another exploit or homebrew attempt. If mac2jb says cleanup is uncertain, restart the console first, then stop that session.

If typing stops partway through, inspect and clear the partial input before retrying. After an exploit attempt has started, restart the console before trying again. Do not send REMOVE twice in the same SmileBASIC session.

Use Open session logs if something fails. Keep the error and logs; an unexpected USB helper crash does not by itself mean the driver is missing.

• GUI guide and Homebrew guide.
• Terminal commands, builds and detailed troubleshooting.
• Driver source and checksums, source/licensing details, and packaging notices.
• mac2jb license and vendored source information.

• pepsipu — ns2jb, the original Switch 2 exploit and FS research.
• kurumuz — the ns2jb compatibility fork bundled in this checkout.
• ShinyQuagsire — libusbd and macos_usb_gadget_poc, USB device emulation and experimental macOS gadget-driver work.
• misshexa66 — OunceCake, the game-content export tool.
• RavensClawX — HBLauncher, the SmileBASIC GPU app launcher and SDK.

See the project's included licenses and upstream documentation for copyright, attribution, and reuse terms.