Mtk Usb Serial Port Driver X64 Top 【2026】

A: No. MediaTek stopped signing new drivers after 2021. All "top" drivers today rely on either test-signing mode or leveraging a 2016 certificate that Microsoft has since deprecated.

Even the best x64 drivers fail due to Windows security. Here is the diagnostic table.

| Error Code | Message | Cause | Fix (x64 Specific) | | :--- | :--- | :--- | :--- | | Code 52 | Driver not digitally signed | Windows DSE is active. | Reboot into "Disable Driver Signature Enforcement" OR use Driver Signature Enforcement Overrider (DSEO). | | Code 10 | Device cannot start | The Preloader driver timed out. | The phone exited Preloader. Disconnect battery, reconnect, and click "Download" in SP Flash Tool within 3 seconds. | | Code 43 | Device descriptor failed | USB cable or port issue. | Use USB 2.0 port (not USB 3.0). Replace the USB cable with a data-sync cable (not charge-only). | | Code 19 | Corrupted registry | Old driver leftovers. | Run USBDeview → Uninstall all grayed-out MTK devices → Delete driver packages from C:\Windows\System32\DriverStore. |

Best for: Advanced users needing preloader and DA mode stability. mtk usb serial port driver x64 top

This driver comes bundled with SP Flash Tool. It is widely considered the top choice for repair technicians because it handles the “preloader → download agent” handshake better than the generic serial driver.

Installation tip: You must temporarily disable driver signature enforcement (Shift + Restart → Disable Driver Signature Enforcement) on x64 Windows to install this.

Though not directly related to driver installation, these steps are crucial for using your device with the computer: A: No

✅ No yellow exclamation marks – you’re ready to flash.

Warning: Many "driver download" websites bundle malware. We tested and verified the hashes below.

  • Open Device Manager.
  • Connect the MediaTek device in the required mode (e.g., preloader, diag, or USB debugging enabled).
  • Locate the unknown device or existing COM device, right-click > Update driver > Browse my computer for drivers > Let me pick from a list > Have Disk > Point to the driver .inf file.
  • Complete installation and verify a new "MTK USB Serial Port (COMx)" appears under Ports (COM & LPT).

    • If you work with Android smartphones, tablets, or embedded devices powered by MediaTek (MTK) chipsets, you have likely encountered the dreaded yellow exclamation mark in Device Manager. The culprit? A missing or corrupted MTK USB Serial Port Driver. This driver comes bundled with SP Flash Tool

    With the shift to 64-bit (x64) architectures in modern PCs (Windows 10, 11, and Server), finding a compatible, stable, and functioning driver has become a nightmare. The "top" drivers are not always the newest; they are the ones that bypass Microsoft’s Driver Signature Enforcement (DSE) and correctly handle MediaTek’s proprietary Preloader and DA (Download Agent) modes.

    In this 2,500+ word guide, we will dissect the top 5 MTK USB Serial Port drivers for x64 systems, walk through manual installation, and solve the most common failure points.

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