When a modem or a similar device fails to establish a handshake due to an inability to find the Meta USB COM port, it usually indicates a problem with the device's connection, driver issues, or a configuration mismatch. Here are several steps you can take to troubleshoot and potentially resolve the issue:
Windows may turn off the USB port after enumeration, breaking the handshake. it cannot find the meta usb com port for modem handshake
Fix: "It Cannot Find the Meta USB COM Port for Modem Handshake" When a modem or a similar device fails
The “cannot find Meta USB COM port for modem handshake” error is almost always driver- or mode-related. With the right drivers, proper boot mode, and a clean USB connection, most cases resolve quickly. If you’re working on a bricked device, patience and methodical testing are key. EDL handshake (Sahara/firehose) – uses bulk endpoints, not
Check Device Manager: Look under for entries like “MediaTek USB Port (COMx)” or “Qualcomm HS-USB (COMx)”.
Before jumping to solutions, identify the root cause. This error rarely appears randomly. It is typically triggered by one of the following:
ATI).NV_READ_IMEI (not AT).