If you have a working JIL 1731 on another PC, use a free tool like "Double Driver" to back up the existing driver and restore it on the problematic PC.
Frontech is a budget brand, and its official website (frontech.com / frontechonline.com) primarily focuses on product catalogs rather than driver support. As of this writing, Frontech does host a public database of downloadable drivers for basic peripherals like the JIL 1731. frontech jil 1731 driver
The Frontech JIL 1731 driver provides the necessary software interface to enable communication between Frontech’s JIL 1731 hardware device and Windows-based systems. It installs device-specific firmware handlers, USB/serial communication support, and ensures the device functions correctly with common applications that rely on serial data transfer. If you have a working JIL 1731 on