Nintendo Takes Down Switch Emulators and Mod Chip Firmware in GitHub DMCA Sweep
Nintendo has launched another sweeping copyright enforcement campaign on GitHub, submitting four separate DMCA takedown notices aimed at dismantling both Nintendo Switch emulation projects and hardware modification firmware. According to public notices published by GitHub and reported by IGN and TorrentFreak, the November 6 filings resulted in the removal of 144 mod chip firmware repositories alongside dozens of forks tied to the Citron Neo and Yuzu emulators.
Key takeaways
- First Major Mod Chip Firmware Strike: For the first time in GitHub's public DMCA archive, Nintendo directly targeted microcontroller firmware for hardware mod chips—wiping out a 144-repository network rooted at
Ansem-SoD/Picofly. - Emulator Forks Disabled: Three accompanying notices targeted Switch emulators, disabling a 71-repository fork network for Citron Neo and forcing the removal of source code from two standalone Yuzu mirrors.
- Anti-Circumvention Legal Framing: Nintendo cited 17 U.S.C. § 1201 and the criminal precedent from the Team-Xecuter prosecution, arguing the firmware bypasses boot-sequence Technological Protection Measures (TPMs).
- Limited Impact on Existing Hardware: Already-soldered Picofly, HWFLY, and SX Core chips continue to function normally, though users lose centralized GitHub hosting for firmware updates and reflashing.
Why Nintendo Expanded Its Enforcement to Mod Chip Firmware
While Nintendo has filed more than 90 DMCA notices on GitHub over the years targeting emulators, cryptographic key-dumping utilities like Lockpick_RCM, and signature patches, its November 6 filings mark a notable strategic expansion into hardware-adjacent microcontroller code.
How do Switch mod chips interact with console security?
Early original Nintendo Switch units shipped with an unpatchable Tegra X1 hardware flaw, whereas later revisions—including the Switch Lite and Switch OLED—closed that software entry point. Running custom firmware, homebrew, or Linux on patched consoles requires soldering a physical microcontroller (such as a Raspberry Pi RP2040-based Picofly or HWFLY board) onto the mainboard to glitch the boot sequence. Notably, this hardware glitching method does not work on the Nintendo Switch 2.
In its takedown notice, Nintendo of America asserted that the Switch boot sequence and cryptographic verification constitute protected Technological Protection Measures, stating that distributing firmware that bypasses those checks amounts to unlawful trafficking in circumvention technology under the DMCA.
Breakdown of Nintendo's November 2026 GitHub Takedowns
| Targeted Project | Primary Repository | Repositories Affected & Current Status |
|---|---|---|
| Picofly / HWFLY / SX Firmware | Ansem-SoD/Picofly | 144 repositories (parent + entire fork network) disabled |
| Citron Neo (Switch Emulator) | citron-neo/emulator | 71 repositories (parent + fork network) disabled |
| Yuzu Mainline Mirror | IpwnedU/yuzu-mainline-master | 1 repository; source code and commit history wiped by owner |
| Yuzu Android Mirror | IpwnedU/yuzu-android-master | 1 repository; source code and commit history wiped by owner |
Frequently asked questions
Why were 144 repositories removed from a single mod chip notice?
Under GitHub's fork-network policy, when a copyright holder certifies that a representative sample of forks infringes to the same extent as the parent repository, GitHub disables the entire fork network—taking down Ansem-SoD/Picofly and all 143 connected forks simultaneously.
Does this takedown affect the Nintendo Switch 2?
No. Hardware voltage-glitching mod chips like Picofly and HWFLY only target original Nintendo Switch models (including Lite and OLED revisions) and do not work on the Nintendo Switch 2.
Are all Picofly and Yuzu files completely gone from the internet?
No. Several unflagged Picofly and HWFLY repositories remain active on GitHub, while the stripped Yuzu mirror pages now host README notices directing users to backups archived on the Internet Archive.
Bottom line
While decentralized mirrors and offline archives prevent total erasure, disabling over 215 combined emulator and firmware repositories significantly raises friction for casual modding and reinforces Nintendo's zero-tolerance posture on platform circumvention.