Repair - E8372h-153 Dead Boot

If successful, you can flash firmware.

On the E8372h-153 PCB revision (look for PCB Ver: 153 ), the UART points are usually:

The utility will automatically scan your system ports, find the modem, and begin writing the firmware blocks. If using the command line tool: balong_flash -pX firmware.bin Use code with caution.

The device lights might flash or remain off, but Device Manager should now update to show multiple "Huawei Mobile Connect" ports. E8372h-153 Dead Boot Repair

: Re-check Device Manager. If the PC UI Interface port disappeared, you must unplug the modem and repeat the Step 2 bootpin short sequence. Flashing Fails at Error 13 (Update Version Error)

The E8372h-153 has hidden UART test points (typically TX, RX, GND near the HiSilicon chip). If you solder fine wires and connect a 3.3V USB-to-serial adapter (baud 115200), a dead boot device will often output:

disconnect until the software confirms a "Finish" or "Success" status. 4. Post-Repair Steps IMEI Repair If successful, you can flash firmware

The boot pin is typically a single standalone gold circle near the edge of the board.

What did you get right before it died?

: Use a pair of tweezers or a fine wire to short this gold pad to the metal shield (Ground) while plugging the device into your PC's USB port. The device lights might flash or remain off,

If your device is showing a constant red light or is not recognized by your computer, these are the primary recovery resources:

Check Device Manager under the section. You should see a new device labeled Huawei Mobile Connect - DownLoad Port (COMXX) or USB Serial Device (COMXX) .

fastboot flash xloader xloader.img fastboot flash fastboot fastboot.img fastboot flash boot boot.img fastboot flash system system.img fastboot reboot

Does your computer make a when you plug the device in?