Direct motherboard ports (on the back of a desktop) are more stable than front-panel ports or USB hubs.
Not all USB cables are created equal. Many charging cables lack the data wires necessary for data transfer. Even if the cable works for other things, high-speed handshake protocols can fail due to signal degradation caused by a cheap cable or a loose port.
If you are reading this, you are likely staring at a flashing cursor in a terminal window, a bricked router, or a development board that refuses to communicate. You have just tried to flash a firmware image, perhaps OpenWrt, Quectel, or a proprietary OEM build, and the process has stalled. The system is trying to reach the modem via a specific COM port that the operating system insists does not exist. it cannot find the meta usb com port for modem handshake
Windows 10 and 11 often block unsigned or third-party drivers by default, preventing the META port from initializing.
Troubleshooting "META USB COM Port Not Found" During Modem Handshake Direct motherboard ports (on the back of a
This is the most common culprit. The tool requires MediaTek CDC Serial Drivers to bridge the gap between the hardware and the software.
To fix the problem, you must first understand what the system is trying to do. Even if the cable works for other things,
In every case, the root cause is the same: