In case of soft bricked unit (usually ZTE device with VID/PID 19d2:0076) or fully bricked (no sign of life, just POWER led on), there is another way to enter the CPE into EDL Mode.
Remove the two screws on the bottom of the CPE, slide down the internal part (using a spudger or a flat screw driver to leverage). When you got out the internal part, in the below image, you can see the points for EDL BOOT POINT (red square).
On some units, they may be slightly covered by the radiator:
Use a paperclip or tweezer to short these two points, keep them shorted and attach USB-C cable to the CPE.
You should see into Device Manager (Windows) or lsusb (Linux) a device in EDL Mode:
- For Windows users, you will have this COM port:
- For Linux users you will have this output:
Bus 004 Device 032: ID 05c6:9008 Qualcomm, Inc. Gobi Wireless Modem (QDL mode)
Remove the paperclip/tweezer and use QFIL or edl to flash firmware back into CPE.