To get your G-Star IV GPS receiver working on Windows 11 64-bit, you need to install the Prolific PL2303 USB-to-Serial driver. Since this hardware is older, Windows 11 often fails to recognize it automatically or installs a "Version 3.8" driver that results in a "Code 10" error.
If you rely on the G-Star IV for professional navigation, consider upgrading to a like the GlobalSat BU-353-S4 (which uses a native USB driver) or any FTDI-based GPS puck . Legacy Prolific chips will continue to face challenges with future Windows updates.
A GPS driver is software that enables your computer to communicate with the GPS device. It allows your computer to recognize the device and receive data from it. Without a compatible GPS driver, your computer may not be able to detect the G-Star IV GPS device, rendering it useless. g-star iv gps driver download windows 11 64 bit
To verify that the driver has been installed successfully:
Windows 11 (and Windows 10 before it) enforces stricter driver signing and has deprecated older driver models. The G-Star IV typically uses , which Microsoft flagged as “outdated and insecure” starting with Windows 10 Version 1709. To get your G-Star IV GPS receiver working
Open Command Prompt as Admin → bcdedit /set testsigning on → Reboot. (Place a watermarks on desktop – harmless)
GPS receivers need a clear line of sight to the sky to "lock" onto satellites. Legacy Prolific chips will continue to face challenges
The problem? The original Prolific PL-2303 USB-to-serial chip inside older G-Star IV units is no longer supported by Windows 11 64-bit without special driver workarounds.
October 2025 Target OS: Windows 11 (64-bit) Device: G-Star IV GPS Receiver (USB/Bluetooth)