Article last updated: March 2025. Version v0.2.1Patch stable as of this writing.
Remember: Always back up your system before installing low-level input drivers. And if you find value in Lefty-s, consider supporting its developers — they’re likely left-handed, caffeine-fueled, and debugging at 2 AM.
Double-click install_driver.bat as Administrator. This installs a signed filter driver (required for low-level remapping).