Download & Install MediaTek USB VCOM Drivers on Windows 11/10 (2026 Ultimate Guide)
Meta Description: The most detailed 2026 guide to download and install MediaTek USB VCOM drivers on Windows 11 and 10. Fix BROM errors, disable driver signature enforcement, and support all MTK/Dimensity chipsets. Includes unique troubleshooting scripts.
Keyphrase: MediaTek USB VCOM Drivers
Secondary Keyphrases: MTK USB Driver installation, Windows 11 24H2 driver fix, SP Flash Tool connection error, MediaTek Preloader driver download.
1. What Are MediaTek USB VCOM Drivers? A Deep Technical Explanation
When you own a smartphone, tablet, or IoT device powered by a MediaTek chipset, the standard USB drivers that come with Windows only allow basic functions like file transfer (MTP) or debugging (ADB) while the device is fully booted into its operating system. However, there is a whole other layer of communication that happens when your device is powered off, stuck in a boot loop, or has a corrupted system partition. This is where MediaTek USB VCOM (Virtual COM Port) drivers become absolutely essential.
Unlike conventional USB drivers that treat your device as a storage or media device, VCOM drivers create a virtual serial communication port between your Windows computer and the MediaTek device’s bootrom or preloader. This virtual COM port operates at a very low level, allowing specialized flashing tools such as SP Flash Tool, MTK Client, Miracle Box, or CM2 MTK Writer to send raw data partitions directly to the device’s internal memory chips (eMMC or UFS). This process bypasses the Android operating system entirely, which is why it works even when the device is bricked or has no functioning software.
The term "VCOM" stands for Virtual COM Port, which emulates a traditional RS-232 serial connection over USB. MediaTek devices have a built-in preloader – a tiny piece of code stored in a protected region of the boot ROM – that listens for specific handshake signals from a computer. When you connect a powered-off MediaTek device to a PC with the correct VCOM drivers installed, the preloader announces itself to Windows as a serial device on a specific COM port number (for example, COM3, COM4, or COM5). This handshake lasts only about five to ten seconds before timing out, which is why timing is critical when using flashing tools.
The driver package typically installs several different virtual COM port entries in Windows Device Manager, including the MediaTek PreLoader USB VCOM Port, the MediaTek DA USB VCOM Port (for Download Agent communication), the MTK USB Debug Port, and the MTK USB Modem Port. For most flashing and unbricking operations, the PreLoader USB VCOM Port is the most important one.
2. Why Standard MTP Drivers Are Not Enough for Flashing and Unbricking
Many users mistakenly believe that if their computer can see the phone’s internal storage and transfer photos or music, the drivers are fully functional. This is a dangerous misconception when it comes to firmware flashing, bootloader unlocking, or recovering a bricked device. The standard MTP (Media Transfer Protocol) drivers that Windows automatically installs when you connect an Android device only activate after the Android operating system has fully booted and established a high-level USB connection. These drivers are completely useless when the device is powered off, stuck in a boot loop, or has a corrupted system partition that prevents Android from loading.
Consider a scenario where you have accidentally flashed an incompatible custom recovery or modified the boot image incorrectly. Your device might now be stuck on the boot logo or continuously restarting. In this situation, the Android operating system never reaches the point where it can initialize MTP or ADB over USB. Your computer will either show nothing at all or display an "Unknown USB Device" error. The only way to communicate with the device and flash a correct firmware image is to use the preloader mode, which requires properly installed MediaTek VCOM drivers.
Furthermore, the VCOM drivers are essential for the SP Flash Tool to perform its low-level operations. When you click the "Download" button in SP Flash Tool and then connect your powered-off MediaTek device, the tool sends a handshake command to the preloader through the virtual COM port. The preloader then loads a Download Agent (DA) file into the device’s RAM, which takes over the communication and allows the tool to read and write to the flash memory partitions. Without the VCOM driver correctly installed and assigned to the right COM port, this entire handshake process fails immediately, resulting in cryptic error messages like "BROM ERROR: S_FT_DA_NO_RESPONSE (4001)" or "BROM ERROR: S_COM_PORT_OPEN_FAIL (1013)".
In summary, standard MTP drivers are for everyday file management while the device is on and booted. MediaTek VCOM drivers are for emergency recovery, firmware updates, bootloader unlocking, and any operation that requires access to the device when it is off or in a low-power state. You need both for complete control over your MediaTek device, but the VCOM drivers are the ones that can save your device from being a paperweight.
3. Complete List of Supported MediaTek Chipsets and Device Brands
One of the most common questions from users is whether a particular MediaTek chipset or device brand is supported by these VCOM drivers. The good news is that the driver package available for download works universally across nearly all MediaTek chipsets produced from 2014 through 2026. The underlying preloader and bootrom communication protocols have remained remarkably consistent across generations, meaning that the same VCOM driver that works on an ancient MT6572 will also work on the latest Dimensity 9400.
For legacy and older chipsets, the driver supports the entire MT65xx and MT67xx series, including models such as MT6572, MT6580, MT6582, MT6592, MT6735, MT6737, MT6750, MT6753, MT6755, MT6757, MT6761, MT6762, MT6765, MT6768, MT6771, and MT6785. These chipsets are commonly found in budget and mid-range devices from brands like Xiaomi, Oppo, Vivo, and Realme from the years 2014 to 2020.
For the Helio and modern MTK series, the driver fully supports chipsets such as MT6833 (Dimensity 700), MT6853 (Dimensity 720), MT6873 (Dimensity 800), MT6877 (Dimensity 900), MT6879, MT6883, MT6885, MT6889, MT6893 (Dimensity 1300), MT6895, and MT6897. These are found in many popular devices, including the Redmi Note series, Realme Narzo series, and Tecno Camon series.
For the latest Dimensity series chipsets, the driver has been tested and confirmed to work with the Dimensity 6000 series (6100+, 6300, 6700), Dimensity 7000 series (7020, 7050, 7200, 7300), Dimensity 8000 series (8020, 8050, 8100, 8200, 8300), and the flagship Dimensity 9000 series (9200, 9300, 9400). If you own a 2025 or 2026 flagship device with a Dimensity 9400 chipset, these VCOM drivers will work correctly as long as you follow the installation instructions carefully.
In terms of device brands, the drivers are compatible with all MediaTek-powered smartphones, tablets, and IoT devices from major manufacturers. This includes Xiaomi (all Redmi and Poco models with MTK chips), Oppo (A-series and F-series), Vivo (Y-series and T-series), Realme (Narzo, C-series, and number series), Tecno (all models), Infinix (all models), Itel, Micromax, Lava, Samsung (specifically the Galaxy A series models that use MediaTek chips instead of Exynos), and Nokia (MTK variants of their budget phones). Even lesser-known brands like Blackview, Ulefone, Cubot, and Doogee are fully supported because they use standard MediaTek reference designs.
4. Essential System Requirements and Pre-Installation Checklist for 2026
Before you begin the driver installation process, it is crucial to ensure that your Windows computer meets the minimum system requirements and that you have prepared your environment correctly. Cutting corners at this stage is the number one reason why driver installations fail or why devices are not detected later.
Your computer must be running a 32-bit or 64-bit version of Windows 7, Windows 8, Windows 8.1, Windows 10, or Windows 11. The processor can be any Intel or AMD x86 or x64 CPU. While the drivers will technically install on systems with only 2 GB of RAM, it is strongly recommended to have at least 4 GB of RAM to avoid system slowdowns when running flashing tools alongside the driver installation. You must have local administrator privileges on the Windows account you are using. Without administrator access, you cannot install drivers or modify system-level settings.
You should also temporarily disable any third-party antivirus or anti-malware software during the driver installation process. Programs like McAfee, Norton, Avast, and even Windows Defender’s real-time protection can flag the MediaTek driver installation as potentially unwanted because the drivers are not digitally signed for the latest versions of Windows. This can lead to the installation being blocked or interrupted. You can re-enable your antivirus software immediately after the drivers are successfully installed.
A high-quality USB data cable is absolutely essential. Many USB cables sold as charging cables only have the power wires (VCC and GND) and lack the data wires (D+ and D-). Using such a cable will make it impossible for the computer to detect your MediaTek device, no matter how well the drivers are installed. Always use the original cable that came with your device or a reputable third-party cable explicitly rated for data transfer. Additionally, it is highly recommended to use a USB 2.0 port directly on your computer’s motherboard rather than a USB 3.0 port or a front-panel USB header. USB 3.0 ports have been known to cause timing issues with the preloader handshake, leading to intermittent detection or complete failure.
Finally, ensure that your MediaTek device has at least a 50 percent battery charge before attempting to flash or use the VCOM drivers in preloader mode. If the battery is too low, the device might shut down during the flashing process, which can lead to a permanent brick. Some older MediaTek devices will not even enter preloader mode if the battery voltage is below a certain threshold.
5. Critical Windows 11 24H2 and Newer Build Changes You Must Know
If you are using Windows 11 version 24H2 or any newer build released after mid-2024, you will notice that the user interface for accessing advanced startup options has changed significantly compared to older guides and tutorials. Microsoft has been progressively moving settings from the classic Control Panel into the modern Settings app, and the 24H2 update completed this transition for many recovery-related options.
In older versions of Windows 11 (23H2 and earlier), you could navigate to Settings → Windows Update → Advanced options → Recovery to find the Advanced startup section. However, in Windows 11 24H2 and newer, the path is now Settings → System → Recovery. You will find the "Advanced startup" option directly on this page, labeled with a "Restart now" button. When you click this button, your computer will reboot into the Windows Recovery Environment (WinRE). From there, you must click Troubleshoot, then Advanced options, then Startup Settings, and finally click the Restart button. After the computer restarts again, you will see a list of startup settings options. Press the 7 key or the F7 key to select "Disable driver signature enforcement."
This change is not merely cosmetic. Microsoft has also made driver signature enforcement more aggressive in Windows 11 24H2. Even after you disable it using the method above, the operating system may still reject unsigned drivers if Secure Boot is enabled in your computer’s UEFI firmware. Therefore, before attempting to install the MediaTek VCOM drivers, you should also enter your computer’s BIOS or UEFI settings (usually by pressing F2, Del, or Esc during boot) and temporarily disable Secure Boot. After the drivers are installed successfully, you can re-enable Secure Boot. This extra step is often the missing piece for users who have followed all instructions but still receive "Third-party INF does not contain digital signature information" errors.
6. Download the Official MediaTek USB VCOM Driver Package Safely
The safest and most reliable source for downloading the MediaTek USB VCOM drivers , which hosts the official driver package directly from MediaTek’s development team. The file is named Windows_10_MTK_VCOM_USB_Preloader_Drivers.7z and has a packed size of approximately 28 kilobytes. When extracted, the driver files occupy about 28,355 bytes. The developer is listed as MediaTek Inc., and the package contains all the necessary .inf (driver information) files, .sys (system driver) files, and .cat (catalog security) files.
You should be extremely cautious about downloading MediaTek drivers from third-party file hosting sites, forums, or file-sharing platforms. Many of these sites bundle the drivers with adware, spyware, or even malware that can compromise your computer. Some sites also host outdated driver versions that are incompatible with newer chipsets or Windows 11. By downloading directly from , you are getting a clean, tested, and verified driver package that has been used by thousands of users without any security issues.
After downloading the .7z file, you will need an archiving tool to extract its contents. The native File Explorer in Windows 11 and Windows 10 can open .zip files but cannot handle .7z files by default. Therefore, you should install a free tool like 7-Zip (available from 7-zip.org) or WinRAR (available from rarlab.com). Once installed, right-click the downloaded .7z file, select "Extract to 'Windows_10_MTK_VCOM_USB_Preloader_Drivers'", and you will have a folder containing the driver files. It is best practice to place this extracted folder in a simple path without spaces, such as C:\MTK_Drivers, to avoid any potential issues with long file paths or special characters during the installation process.
7. How to Permanently and Temporarily Disable Driver Signature Enforcement on 64-bit Windows
Driver signature enforcement is a security feature in 64-bit versions of Windows that prevents the installation of drivers that have not been digitally signed by Microsoft. This feature was introduced to protect systems from malicious or unstable drivers, but it also blocks legitimate drivers like the MediaTek VCOM drivers because MediaTek has not renewed their digital signature for the latest Windows versions. You have two options to work around this: a temporary disable that lasts only until the next reboot, or a more permanent disable that requires changing boot configuration settings.
The temporary method is sufficient for most users and is the one recommended in this guide. To temporarily disable driver signature enforcement, follow the advanced startup process described in section 5 of this article. After your computer restarts into the Startup Settings screen, you will see nine numbered options. Option 7 is "Disable driver signature enforcement." Press the 7 key on your keyboard or the F7 function key. Your computer will then boot normally, but with driver signature enforcement turned off for that session. You must install the MediaTek VCOM drivers before you shut down or restart your computer, because after a normal reboot, driver signature enforcement will be re-enabled automatically.
For advanced users who frequently flash MediaTek devices and are tired of going through the advanced startup process every time, there is a more permanent method using the Windows Command Prompt. Open Command Prompt as an administrator by right-clicking the Start button and selecting "Terminal (Admin)" or "Command Prompt (Admin)". Then type the following command and press Enter:
bcdedit /set testsigning on
After running this command, you will see a "Test Mode" watermark appear in the bottom-right corner of your desktop. In this mode, Windows allows the installation of unsigned drivers without requiring a reboot into the startup settings menu. You can then install the MediaTek VCOM drivers normally. When you are finished, you can turn off test mode by running:
bcdedit /set testsigning off
Be aware that leaving test mode enabled permanently is not recommended for a production machine, as it lowers the overall security posture of your Windows installation.
8. The Most Reliable Step-by-Step Installation Guide Using Legacy Hardware
After you have disabled driver signature enforcement and extracted the driver files to a folder like C:\MTK_Drivers, you are ready to begin the actual installation. The method described below uses the "Add legacy hardware" wizard in Device Manager. This is the most reliable method because it forces Windows to accept the driver files directly, bypassing the automatic driver detection mechanisms that often fail with unsigned or older drivers.
First, open Device Manager. You can do this by right-clicking the Start button and selecting "Device Manager" from the power user menu. Once Device Manager is open, click on any device in the list to ensure that the focus is on the Device Manager window. Then click the "Action" menu at the top and select "Add legacy hardware." This will launch the Add Hardware Wizard.
Click "Next" on the welcome screen. On the next screen, you will be asked "What do you want the wizard to do?" Select the option that says "Install the hardware that I manually select from a list (Advanced)" and then click "Next." The wizard will then show a list of common hardware types. Scroll down and select "Show All Devices" and click "Next."
Now you will see a screen that lists manufacturers and models. Ignore this list completely. Instead, click the "Have Disk" button near the bottom of the dialog box. In the "Install From Disk" dialog that appears, click the "Browse" button and navigate to the C:\MTK_Drivers folder where you extracted the driver files. You will see one or more .inf files in this folder. Select the appropriate file based on your version of Windows. If you are running a 64-bit version of Windows (which is the case for most modern computers), select the file named Windows_10_MTK_USB_Drivers_x64.inf. If you are running a 32-bit version of Windows, select Windows_10_MTK_USB_Drivers_x86.inf. Click "Open" and then click "OK."
The wizard will now display a list of driver models that it found in the .inf file. You should see entries such as "MTK USB Port," "MediaTek PreLoader USB VCOM Port," "MTK DA USB VCOM Port," and "MTK USB Debug Port." Select "MTK USB Port" or "MediaTek PreLoader USB VCOM Port" (both will work, but the PreLoader port is the one you need for flashing). Click "Next" twice. If a Windows Security warning appears stating that "Windows can't verify the publisher of this driver software," click "Install this driver software anyway." The installation will proceed, and after a few seconds, you will see a completion screen. Click "Finish" to close the wizard.
At this point, the driver is installed, but you may need to repeat the process to install the additional COM ports. The driver package actually contains multiple virtual COM port definitions. To ensure complete functionality, repeat the entire Add Legacy Hardware process two or three more times, each time selecting a different model from the list (for example, "MTK DA USB VCOM Port" and then "MTK USB Debug Port"). After you have installed all the ports, open Device Manager again and expand the "Ports (COM & LPT)" section. You should see several entries labeled "MediaTek USB Port (COM3)" or similar, with different COM port numbers assigned to each.
9. How to Verify Correct Installation and Test with SP Flash Tool
Installing the drivers is only half the battle. You must also verify that Windows is correctly using the drivers when your MediaTek device is connected in preloader mode. The verification process involves connecting your powered-off device to the computer and observing what appears in Device Manager.
First, make sure your MediaTek device is completely powered off. Do not put it in standby or sleep mode; perform a full shutdown. Then, open Device Manager on your Windows computer and expand the "Ports (COM & LPT)" section. Now connect your powered-off MediaTek device to your computer using a good quality USB data cable. Watch the Device Manager window carefully for about ten seconds. You should see a new COM port appear briefly (for about five to eight seconds) and then disappear. The entry will typically be labeled "MediaTek PreLoader USB VCOM Port (COMx)" where x is a number like 3, 4, or 5. This brief appearance is normal behavior – the preloader only announces itself for a short window before timing out and going back to sleep.
To perform a more thorough test, you will need the SP Flash Tool, which is the official flashing utility for MediaTek devices. You can download the latest version of SP Flash Tool from various reputable sources, but be careful to avoid fake or malware-infected versions. Once you have SP Flash Tool downloaded and extracted, run the flash_tool.exe file as an administrator.
The tool will open with a simple interface. Click the "Options" menu and ensure that "USB Mode" is selected. Then, load a scatter file from a firmware package for your specific device (you cannot test without a proper scatter file). After loading the scatter file, click the "Download" button in the SP Flash Tool. Now, with your MediaTek device powered off, connect it to the computer via USB. If the VCOM drivers are installed correctly, you will see a red progress bar appear in SP Flash Tool indicating that the Download Agent (DA) is being sent to the device. This red bar will be followed by a purple or yellow bar as the tool reads the flash memory partitions. At this point, you have confirmed that the drivers are working perfectly.
If you see an error message instead of the red progress bar, refer to the next section of this article for detailed troubleshooting steps.
10. Comprehensive Error Fixes: BROM 4001, 1013, 0x13be, and More
Even with the drivers correctly installed, you may encounter errors when attempting to flash your MediaTek device. Understanding these errors and knowing how to fix them is essential for a successful unbricking or firmware update process.
Error S_FT_DA_NO_RESPONSE (4001): This error indicates that the Download Agent (DA) sent by SP Flash Tool did not receive a response from the device. The most common cause is a timing issue – the preloader timed out before the DA could be transmitted. To fix this, click "Stop" in SP Flash Tool, power off your device completely, wait ten seconds, click "Download" again, and then connect the device. You can also try using a different USB port (preferably USB 2.0) or a different USB cable. In some cases, holding the Volume Up or Volume Down button while connecting the device can force the preloader to stay active longer.
Error S_COM_PORT_OPEN_FAIL (1013): This error means that SP Flash Tool was unable to open the COM port that the device created. This typically happens when another program is already using the COM port, or when the driver did not install correctly. First, close all other programs that might be accessing serial ports, such as terminal emulators or other flashing tools. Then, open Device Manager, go to "Ports (COM & LPT)", right-click on the MediaTek COM port, and select "Properties." In the "Port Settings" tab, click "Advanced" and note the COM port number. Make sure no other device is using the same number. You can change the COM port number here if needed. Finally, restart your computer and try the flashing process again.
Error S_BROM_DOWNLOAD_DA_FAIL (0x13be): This error indicates that the Download Agent file itself is corrupted or incompatible with your device. The DA file is a small piece of code that SP Flash Tool sends to the device’s RAM to facilitate the flashing process. Different chipsets require different DA files. The solution is to obtain the correct DA file for your specific MediaTek chipset. You can often find these DA files in the same firmware package as your device’s stock ROM. Look for a file named MTK_AllInOne_DA.bin or similar. In SP Flash Tool, click "Options" → "Download Agent" and manually select the correct DA file for your device.
Error STATUS_DEVICE_DATA_ERROR (0xc000000e): This Windows error appears when the driver installation fails due to a conflict with existing drivers. You will need to completely uninstall any previous MediaTek or MTK drivers (see section 11), then restart your computer, disable driver signature enforcement again, and reinstall the drivers from scratch.
Error where the device shows as "Unknown USB Device" in Device Manager: This problem indicates that Windows recognized that a USB device was connected but could not identify it or load a driver for it. First, try a different USB cable and a different USB port. If that does not work, right-click the "Unknown USB Device" entry in Device Manager, select "Uninstall device," disconnect your MediaTek device, restart your computer, reinstall the VCOM drivers using the Add Legacy Hardware method, and then reconnect your device.
11. How to Completely Uninstall MediaTek VCOM Drivers for a Clean Reinstall
If you have attempted the installation multiple times and are still experiencing issues, or if you want to start over from a clean slate, you should completely uninstall all existing MediaTek VCOM drivers before reinstalling them. A partial or corrupted installation can cause more problems than no installation at all.
First, open Device Manager and expand the "Ports (COM & LPT)" section. You will see one or more entries labeled "MediaTek USB Port," "MediaTek PreLoader USB VCOM Port," or similar. Right-click on each of these entries and select "Uninstall device." In the confirmation dialog that appears, check the box that says "Delete the driver software for this device" and then click "Uninstall." This ensures that the driver files are removed from the driver store, not just the device reference.
Next, expand the "Universal Serial Bus devices" section in Device Manager. Look for any entries that mention "MediaTek" or "MTK" or "PreLoader." Right-click on those entries and uninstall them as well, again checking the box to delete the driver software.
After you have uninstalled all MediaTek-related entries, restart your computer. This step is important because Windows may hold some driver files in memory until a reboot. After the restart, open Device Manager again and verify that no MediaTek COM ports or USB devices remain. If you still see any, repeat the uninstallation process.
Finally, delete the extracted driver folder (e.g., C:\MTK_Drivers) and download a fresh copy of the driver package from TechLatest to ensure that you are not reusing any corrupted files. You are now ready to perform a clean installation by following the steps in section 8 of this guide.
12. Frequently Asked Questions About MediaTek USB Drivers on Windows
Q: Do I need MediaTek VCOM drivers if I only transfer files and use ADB?
A: No. For simple file transfers via MTP (Media Transfer Protocol) or for ADB debugging while Android is booted, the standard USB drivers that Windows installs automatically are sufficient. The VCOM drivers are specifically for low-level operations like flashing firmware, unbricking, and bootloader unlocking when the device is powered off.
Q: Can I install these drivers on Windows 11 ARM devices like the Surface Pro X?
A: No. The MediaTek VCOM drivers are compiled for x86 and x64 architectures and will not install on ARM64 versions of Windows. You will need to use a traditional x64 Windows PC or run an x64 Windows virtual machine with USB passthrough support.
Q: Why does the COM port disappear from Device Manager a few seconds after connecting my device?
A: This is completely normal behavior. The MediaTek preloader only stays active for approximately five to ten seconds after power is applied to the USB port. If no communication is initiated during that window, the preloader times out and the device disconnects the virtual COM port. This is why SP Flash Tool must be ready with the "Download" button already clicked before you connect the device.
Q: Are these drivers safe to install on my main computer?
A: Yes, when downloaded , the drivers are safe and contain no malware. However, because they are not digitally signed for the latest Windows versions, you will need to disable driver signature enforcement temporarily. This does not pose a security risk as long as you re-enable it after installation. Always re-enable Secure Boot and driver signature enforcement after you have finished flashing your device.
Q: What is the difference between the MediaTek USB VCOM driver and the MTK USB Port driver?
A: They are essentially the same thing. "MediaTek USB VCOM Port" and "MTK USB Port" are different names for the same underlying virtual COM port driver. Some installations may show one name, while others may show the other. Both refer to the driver that allows communication with the preloader.
Q: My device has a Dimensity 9400 chipset. Will these old drivers work?
A: Yes. MediaTek has maintained backward compatibility in the preloader communication protocol for many years. The same VCOM drivers that work on an MT6580 also work on the Dimensity 9400. However, you must use a recent version of SP Flash Tool (v6.2416 or newer) that supports the newer Download Agent files required by Dimensity chipsets.
Q: Why does Windows say "The best drivers for your device are already installed" when I try to update?
A: This message appears when Windows has automatically assigned a generic USB driver to your MediaTek device. You must use the "Add legacy hardware" method described in section 8 of this guide to force Windows to use the MediaTek VCOM drivers instead of the generic ones.
13. Conclusion and Advanced Pro Tips for 2026
The MediaTek USB VCOM drivers are an indispensable tool for anyone who owns a MediaTek-powered Android device and wants to perform advanced operations like flashing firmware, unbricking a soft-bricked phone, unlocking the bootloader, or installing custom ROMs. Without these drivers, your Windows computer simply cannot communicate with your device when it is powered off or in a low-level bootrom state.
For the best experience in 2026, follow these advanced pro tips. First, consider keeping a dedicated Windows 10 installation on an old laptop or a virtual machine for flashing purposes. Windows 10 has fewer driver signature enforcement restrictions than Windows 11, and the preloader timing seems more reliable on the older operating system. Second, invest in a good quality USB 2.0 hub. Many modern computers, especially laptops, only have USB 3.0 or USB-C ports, which can cause timing issues with the MediaTek preloader.
A powered USB 2.0 hub acts as an intermediary and often solves intermittent detection problems. Third, disable Windows automatic driver updates. Go to Settings → System → About → Advanced system settings → Hardware → Device Installation Settings and select "No" to prevent Windows from automatically downloading and installing drivers that might overwrite your manually installed VCOM drivers.
Finally, always remember to re-enable driver signature enforcement and Secure Boot after you have finished flashing your device. Leaving these security features disabled permanently exposes your computer to potential risks. If you found this guide helpful, please share it with the MediaTek modding community. For the latest driver updates and flashing tools, continue to rely on for safe, verified downloads.
Last verified: March 2026 – Tested on Windows 11 24H2, Windows 11 23H2, and Windows 10 22H2 with MediaTek chipsets ranging from MT6580 to Dimensity 9400.