Driver: Jxmcu

sudo udevadm control --reload-rules sudo udevadm trigger

Try these generic approaches:

Maya extracted the ZIP using "123456" (which worked). Inside: a .sys file, an ancient .inf , and a README.txt that read: jxmcu driver

Even if the driver is installed, make sure you have selected the correct COM port under Tools > Port in your IDE. Conclusion sudo udevadm control --reload-rules sudo udevadm trigger Try

| Aspect | Details | |--------|---------| | | Driver for a specific MCU from a smaller Chinese manufacturer (likely Jingxin Microelectronics) | | Common interfaces | USB Virtual COM Port, DFU, HID, custom debug protocol | | Typical OS | Windows (most likely), Linux, macOS | | Where to get | Manufacturer site, seller, Chinese tech forums, or use generic USB drivers | | Alternative | Use libusb /Zadig if no official driver exists | an ancient .inf