The Gun4IR software (GUI) is essential for flashing the firmware onto your Arduino-based lightgun and performing initial calibration. While the project is a labor of love by developer JB (Jean-Baptiste Bongrand), a one-time license fee supports ongoing development and provides you with the official, most up-to-date tools. Purchasing a license grants you: GUI Software Access : Needed to configure and calibrate your gun. Firmware Updates
[ Your Computer ] ──► ( GUN4IR GUI Software ) ──► [ Unlocks Calibration & Flashing ] ▲ │ (Checks for File) │ [ gun4ir.license ] License file for Guncon2 setup GUI? - Facebook gun4ir license file 2021
If you purchase a turnkey lightgun from an authorized builder (such as syndianet, RGS, or similar boutique arcade shops), the cost of the license is bundled into the hardware. The gun arrives pre-flashed, and the builder usually provides your unique license file via email or a download link for future firmware updates. Avoid "Free" Download Risks The Gun4IR software (GUI) is essential for flashing
, making it one of the fastest home lightgun solutions available. Closed-Source Nature: Firmware Updates [ Your Computer ] ──► (
You got a license file, but your Gun4IR still shows “Unlicensed” or won’t display a crosshair. Try these fixes: