| Threat | Description | Severity | |--------|-------------|----------| | | Attacker supplies URL to a rogue boot.firm that could brick console, steal NNID tokens, or install spyware. | High | | Man-in-the-Middle (MITM) | HTTP URLs (instead of HTTPS) allow replacement of firmware with malicious payload. | Medium (but many QR examples use HTTP) | | Hardcoded HMAC key | Static key found in v2.6 binary: "LumaUpdaterMagic2020" (reversible). HMAC doesn’t prevent replay attacks. | Low (obscurity only) | | Camera buffer overflow | Untested – QR decoding library quirc is C-based; fuzzing may reveal RCE. | Theoretical |
From your 3DS home menu, launch the application (the purple icon with a briefcase). luma updater 2.6 qr code