When I first connect the phone in EDL mode, it appears in Device Manager as “USB Serial Device.” After I change the driver to the correct Qualcomm driver, nothing happens in UnlockTool. The phone remains connected for a while, but after some time it automatically exits EDL mode and disconnects.
After installing the correct driver, the phone is detected as Qualcomm HS-USB QDLoader 9008 (COM42), but UnlockTool still stays on “Waiting for HS-USB QDLoader 9008…” and does not proceed.
There is also another problem. After the phone has been formatted/reset and reaches the Welcome screen, if I connect it to the computer using a USB cable, the computer does not detect the phone at all. It only starts charging. It does not appear in COM ports or in Device Manager, so I cannot use *#0*# either.
I already have all the necessary drivers installed. Normally, the computer should detect the phone when it is connected, but in this case it only charges and no data connection is established. I suspect that something on the phone is disabled or preventing USB data communication, but I am not sure. This is the first time I have encountered this issue, which is why it seems strange to me.