G Star Iv Gps Driver Download Bu-353s4 Windows 11 File

  • Note the COM port number (e.g., COM3 or COM4). You will need this for your mapping software.

    • Here is the problem: Windows 11 loves security. It hates "unsigned legacy drivers."

    When you plug the BU-353S4 into a fresh Windows 11 machine, the OS shrugs. It sees a "USB Serial Converter." It installs a generic Microsoft driver (usbser.sys). And then... nothing. The GPS puck lights up (steady blue LED), but your navigation software (OpenCPN, Google Earth, or SailGrib) hears only static.

    Why? Because the Prolific PL-2303 chip inside the BU-353S4 (which converts USB to old-school serial data) was blacklisted by Microsoft in 2020 due to counterfeit chips flooding the market. Windows 11 refuses to load the old v3.3.2 driver out of the box.

    If the official Prolific installer refuses to run, these alternative sources have been verified for Windows 11: G Star Iv Gps Driver Download Bu-353s4 Windows 11

    Warning: Never download from "driver-driver.com" or "gps-drivers.org" – these are known for adware or fake drivers that will blue-screen Windows 11.

    Introduction: Why Your BU-353S4 Needs the Right Driver on Windows 11

    The GlobalSat BU-353S4 is a legendary puck-style GPS receiver, cherished by sailors, truckers, GIS professionals, and aviation enthusiasts for its rugged build and reliable SiRF Star IV chipset. However, with the rollout of Windows 11, Microsoft introduced stricter driver signature enforcement and changes to how legacy COM ports are handled. As a result, many users searching for "G Star IV GPS Driver Download BU-353S4 Windows 11" find themselves staring at an unresponsive device or error code 10 in Device Manager. Note the COM port number (e

    This article provides a definitive, step-by-step walkthrough to download, install, and troubleshoot the correct G Star IV (SiRF Star IV) driver for your BU-353S4 on Windows 11. We will cover native drivers, Prolific chipset quirks, and advanced terminal testing.

    If you own a GlobalSat BU-353S4 GPS receiver (often referred to as “G Star IV” due to its SiRF Star IV chipset), you need the correct driver to make it work on Windows 11. While Windows 11 includes basic support for many USB GPS devices, the BU-353S4 works best with the proper prolific USB-to-serial driver.

    Windows 11 blocks unsigned or modified legacy drivers. Here is the problem: Windows 11 loves security

    Installing the driver is only half the battle. The BU-353S4 does not have a native "dashboard" app. It simply streams data. You must use third-party software to view the GPS coordinates.

    Cause: Windows 11 blocked the driver due to a missing signature or chip counterfeit detection.

    Fix:

  • Disable Driver Signature Enforcement temporarily: