Введена поддержка драйвера для 64х битных систем.
Upon reboot, a list of options will appear. Press or F7 to select "Disable driver signature enforcement."
Click > Have Disk , and browse to your downloaded driver folder. Select the .inf file (e.g., usbser.inf or vcom.inf ).
Troubleshooting Missing META USB COM Ports for Modem Handshake The failure of a system to recognize the META USB COM port
The phone powers up its bootloader and sends a signal to the PC via a temporary port (usually labeled MediaTek PreLoader USB VCOM ).
Click on your computer name, then select > Add legacy hardware . Select Install from a list... > Show All Devices .
Troubleshooting the "USB COM Port" error can be incredibly frustrating, especially when you are just trying to get your device connected. This error usually stems from a communication breakdown between your computer's operating system and the device's firmware.
Windows 10 and 11 block unsigned MediaTek drivers by default. Hold the Shift key while clicking Restart in the Windows Start Menu. Go to Troubleshoot > Advanced options > Startup Settings > Restart . Upon reboot, press 7 or F7 to select "Disable driver signature enforcement."
To help me give you more specific advice, could you let me know: model of device (or chipset) are you working with? software/tool
Click on your computer name at the top, then click > Add legacy hardware .
The most common culprit, however, lies within the operating system's driver stack. Modern desktop operating systems, particularly Windows 10 and Windows 11, enforce strict driver signature verification to protect system integrity. MediaTek's servicing drivers are often legacy files or lack updated digital signatures from Microsoft. Consequently, when the device is plugged in and attempts to register the VCOM (Virtual COM) port, the operating system may silently block the driver or load a generic, non-functional USB mass storage driver instead. Without the specific MediaTek USB VCOM driver actively listening on the designated port, the flashing or diagnostic software remains blind to the device's presence. The software sends out its probe signals into a void, unable to establish the handshake because the bridge between the hardware and the software has not been built.
Connect the turned-off phone. Watch the list carefully for 2 seconds.
Usually, it is Volume Down + USB , but sometimes it is Volume Up + USB or both volume buttons.
you aren’t alone. This specific error means your PC and device are failing to establish a specialized connection protocol required for deep-level communication.
The "cannot find the meta usb com port for modem handshake" error is rarely a sign of a broken phone. Instead, it is a classic symptom of Windows failing to handle the rapid switch between a device's Preloader state and its META mode state. By disabling driver enforcement, filtering the USB port via LibUSB, and utilizing proper button combinations, you can stabilize the COM port connection and successfully complete the modem handshake. To help you get this handshake working, let me know: What and version are you currently using?
Follow these steps in order, as they progress from the most basic and likely solutions to more advanced, specific fixes.
To help me tailor the next steps for your specific setup, please provide a few more details:
To overcome the invisible barrier between the computer and the modem, a systematic approach to troubleshooting is required. One must first isolate the physical variables by utilizing a high-quality, short USB cable connected directly to the motherboard's rear ports, preferably utilizing a USB 2.0 interface to avoid the timing complexities of USB 3.0. Following physical optimization, the operating system's defenses must be temporarily lowered by disabling driver signature enforcement. This allows the installation of the specific MTK Preloader and VCOM drivers required to translate the device's hardware signals into a COM port that the software can recognize.
Ensure your cable is capable of data transfer, not just charging.
By following these steps, you should be able to resolve the "META USB COM port for modem handshake" error and proceed with your flashing or repair operation.
Plug in your powered-off phone while holding the Volume keys.
