WebUSB Fusée Launcher

Choose a Payload



  1. Put the Switch in RCM and connect it to your device. (Insert your jig into right-joycon rail and hold volume-up while powering it on)
  2. Select one of the example payloads, or upload one.
  3. Press 'Do the thing!'
  4. On the consent screen that appears, select 'APX' and hit confirm. If APX does not appear, ensure your device is in RCM and connected.
  5. If all goes well, the payload will launch!

Extra Info


Fusee Launcher ported to JavaScript using WebUSB.

Source can be found on GitHub under the MIT license (or by hitting view source, there is no backend!).
Ported from fusee-launcher.
Thanks to ktemkin and ReSwitched for Fusée Gelée and a ton of other things!
Web exploit code developed by atlas44.

Powered by github.com/webrcm