Gev189 Driver

If your system relies on a GEV189 driver, implement these low-cost improvements:

Because the computer sees a serial connection through a USB port, a specific driver is required to "bridge" that communication. Why You Need the GEV189 Driver

Match the COM port settings exactly. If Device Manager shows COM4 , your transfer software (like Leica Infinity) must also be set to COM4 . Ensure the baud rate, data bits, and parity match your specific total station's system settings. Yellow Exclamation Mark in Device Manager gev189 driver

To the computer, the GEV189 was a stranger; to the Leica, the computer was a void. The Resolution: The 3.3.2.0 Secret

| Error Code | Message | Solution | |------------|---------|----------| | | “This device cannot start” | Conflict with IRQ. Disable COM ports in BIOS, free up resources. | | Code 28 | “Drivers not installed” | INF file missing. Re-run installer as Admin. | | Code 31 | “Device not working properly” | Corrupt registry. Uninstall, delete C:\Windows\INF\oem*.inf references to GEV189, reinstall. | | Code 52 | “Unsigned driver (Windows 10/11)” | Boot into Advanced Startup → Disable Driver Signature Enforcement . | | BSOD 0x7E (System thread exception) | Memory access violation | Likely a RAM conflict or outdated BIOS. Update motherboard BIOS and move PCI card to a different slot. | If your system relies on a GEV189 driver,

: Plugging the cable into a different physical USB port forces Windows to assign a new COM port number.

GEV189 Driver: A Comprehensive Guide for Leica Data Transfer Cables Ensure the baud rate, data bits, and parity

The GEV189 driver often fails if shared with a USB controller or GPU. In BIOS: