11 [upd] - G Star Iv Gps Driver Download Bu-353s4 Windows

G-Star IV (BU-353S4) GPS Driver Download for Windows 11

5. Installation Procedure (assumes CP210x or PL-2303 driver)

1. Download correct driver (x64 for 64-bit Windows 11).
2. Unblock installer if downloaded from Internet: right-click → Properties → Unblock (if present).
3. Run installer as Administrator and follow prompts.
4. Reboot system if prompted.
5. Plug the GPS device into a USB port; allow Windows to finish driver installation.
6. Confirm COM port assignment in Device Manager under “Ports (COM & LPT).”

If Windows driver signature enforcement blocks installation:

• Use official signed drivers; avoid disabling signature enforcement unless necessary.
• If necessary for testing, temporarily disable driver signature enforcement (advanced troubleshooting) and reinstall, then re-enable enforcement.

2.1 Device Specifications

• Model: BU-353S4
• Chipset: SiRF StarIV (GPS Engine) + Prolific PL-2303 (USB Interface)
• Interface: USB 2.0
• Data Protocol: NMEA-0183 v3.0
• Form Factor: Water-resistant magnetic shell with 5-meter cable.

Important Preface: Windows 11 Compatibility

The G-Star IV (BU-353S4) is an older device that uses a Prolific PL-2303 USB-to-Serial chip. Windows 11 often blocks the older drivers these devices require, or automatically installs a generic driver that causes a "Code 10" error (Device Cannot Start). G Star Iv Gps Driver Download Bu-353s4 Windows 11

To make this work on Windows 11, you must prevent Windows from automatically overwriting the correct driver. G-Star IV (BU-353S4) GPS Driver Download for Windows 11 5

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Step 4: Install the Prolific Driver on Windows 11

1. Right-click the downloaded driver installer (.exe file).
2. Select Properties → Compatibility tab.
3. Check "Run this program in compatibility mode for:" → Choose Windows 8 or Windows 10.
4. Check "Run this program as an administrator".
5. Click OK, then double-click the installer.
6. Follow the on-screen instructions (accept the license agreement, typical installation).
7. Do NOT plug in the GPS yet. After installation completes, shut down your PC completely (not restart), then power on.

Part 1: Understanding the BU-353S4 and the "G Star IV" Chipset

Before downloading any driver, it is critical to understand what you are working with. Download correct driver (x64 for 64-bit Windows 11)

• Full Model: GlobalSat BU-353S4
• Chipset: SiRF Star IV (often marketed as "G Star IV" or "G-Star IV")
• Interface: USB to virtual Serial (COM port)
• Internal Chip: Prolific PL-2303TA (this is the key to the driver)

Why does this matter? Windows 11 does not natively recognize the "SiRF Star IV" by name. Instead, it sees the USB-to-Serial bridge chip. The BU-353S4 uses a Prolific PL-2303 variant. Microsoft removed built-in support for older PL-2303 chips (HXA, HXD) in Windows 11. However, the BU-353S4 typically contains the PL-2303TA (or TB), which is compatible if you install the correct Prolific driver, not a "GPS driver."

Key Takeaway: You are not searching for a "G Star IV GPS driver." You are searching for the Prolific PL-2303 driver v1.14.0 or newer that is signed for Windows 11.

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