Getting Started

Finding your serial number

The first thing to do is determine if your Switch is vulnerable to fusee-gelee, the exploit we will be using to launch CFW.

This vulnerability was independently discovered by several different Switch hacking teams, and multiple variants of it were released to the public in April 2018 after a 90-day disclosure period ended. Nintendo and NVIDIA were made aware of the issue before the public release as a result, and Switch systems that are not vulnerable to the exploit started being spotted in the wild in July 2018. NVIDIA publicly acknowledged the flaw in April as well.

Patched units can be identified by their serial number. This number can be found on the bottom of your Switch adjacent to the USB-C port, or in the Settings applet at System -> Serial Information.

 

Visual for System Settings serial location

 

Determining if your Switch is vulnerable

The homebrew community has crowdsourced a list of known serial numbers which are vulnerable to fusee-gelee.

Notice

If you are unsure if your serial is patched, you can test your console yourself following the instructions here.

 

The following information is based on this GBATemp thread.

  • If your serial starts with XAW1:
    • XAW10078XXX and below are unpatched
    • XAW10079XXX and above are potentially patched
    • XAW1012000X and above are patched
  • If your serial starts with XAW4:
    • XAW4001100X and below are unpatched
    • XAW4001200X and above are potentially patched
    • XAW4003000X and above are patched
  • If your serial starts with XAW7:
    • XAW7001780X and below are unpatched
    • XAW7001790X and above are potentially patched
    • XAW7003000X and above are patched
  • If your serial starts with XAJ1:
    • XAJ1002000X and below are unpatched
    • XAJ1002100X and above are potentially patched
    • XAJ1003000X and above are patched
  • If your serial starts with XAJ4:
    • XAJ4004600X and below are unpatched
    • XAJ4004700X and above are potentially patched
    • XAJ4006000X and above are patched
  • If your serial starts with XAJ7:
    • XAJ7004000X and below are unpatched
    • XAJ7004100X and above are potentially patched
    • XAJ7005000X and above are patched
  • If your serial starts with XAJ9:
    • These units are refurbished units provided by Nintendo. No information is known yet, but they are potentially patched.
  • If your serial starts with XAK:
    • No information is known yet- you are encouraged to continue with the guide and report on the GBATemp thread if the guide worked, along with the first few digits of your serial number.

 

Continue to SD Preparation