Check Device Manager. You should see (usually COMxx). Step 3: Loading the Bootloader
Try a different USB port, preferably a USB 2.0 port on the back of the motherboard.
The Huawei E8372h-153 is a popular 4G Wingle, but firmware updates or power failures can sometimes lead to a "dead boot" state. This occurs when the device becomes unresponsive, shows no lights, or is not recognized by your computer. E8372h-153 Dead Boot Repair
Once the PC recognizes the port, you need to "wake up" the chipset. Run the tool.
Use your tweezers to (the metal shielding of the USB plug or a ground pad). Check Device Manager
A compatible .bin or .exe firmware file for the E8372h-153.
Huawei Mobile Connect drivers and FC Serial drivers. The Huawei E8372h-153 is a popular 4G Wingle,
Wait for the progress bar to reach 100%. during this stage, as it can permanently brick the hardware.
This often indicates a corrupted firmware file. Download a known working version from a reputable forum like 4PDA or GNU-Huawei.
Since the device won't boot normally, you must force it into "USB COM" mode. Open on your Windows PC.