: If you receive "Error Code 13", you may need to use a specific version that matches your device's security level. 4. Restore IMEI and WebUI (If Necessary)
: A high-quality USB extension cable or direct connection to the motherboard USB ports.
: The computer does not show any COM ports in Device Manager when the modem is plugged in.
fastboot flash xloader xloader.img fastboot flash fastboot fastboot.img fastboot flash boot boot.img fastboot flash system system.img fastboot reboot
: A small needle or tweezers for the "boot shot" and a PC running Windows.
Use a firmware flashing tool (like the standard Huawei Update Wizard) to install a fresh firmware version.
: For burning the raw firmware bins. Firmware Files :
Since the device won't boot normally, you must force it into "USB COM" mode. Open on your Windows PC.
Prepare your conductive tweezers. Press one tip firmly onto the , and the other tip onto the USB metal housing (or any large grounded shield plate).
While holding the short firmly, plug the modem into a USB port on your PC. Hold the short for 2 to 3 seconds, then release it.
Hold the tweezers firmly in place to maintain the short circuit. Plug the device into the USB port of your computer. Release the tweezers after 2 to 3 seconds.
: A pair of tweezers or a copper wire for shorting pins. Drivers : Huawei Serial Drivers (FC Serial Driver). Software : Balong USB Downloader (GUI version recommended). usblsafe.bin or usbloader.bin file specific to the E8372h. Compatible firmware (e.g., version 21.328 or similar). Step-by-Step Repair Process 1. Disassemble and Enter Boot Mode (The Needle Method) Remove the casing of your E8372h-153 to reveal the PCB.
If it returns partition table, you are in recovery mode.
Reinstall the "Handset Product" drivers and try a USB 2.0 port.
: This guide applies strictly to the E8372h-153 variant. Forcing firmware meant for the -608 or -320 variants onto this device will permanently destroy the radio frequency (RF) calibration data.
Open on your Windows PC and expand the Ports (COM & LPT) section.
If prompted for a password (Flash Code), use a Huawei unlock calculator online to generate the code using your modem's IMEI number, or use a firmware version that bypasses digital signatures.
Here’s a technical feature guide for .