It looks like you’re referencing a file named:

Look for any item flagged with a yellow exclamation mark (often listed as QHSUSB_BULK or MTK USB Device ). Right-click the problem device and select . Choose Browse my computer for drivers .

Reboot again. You will see "Test Mode" watermark—that's fine.

The Last Good Build

Open the on your PC (press Win + X and select Device Manager).

The thing at the door stopped knocking.

: Opens the Qualcomm HS-USB Diagnostics interface for IMEI repair and network tuning.

Upon reboot, press or F7 to select Disable driver signature enforcement . Step 2: Execute the Setup Package

Select or Wireless option if prompted for the network configuration type (standard default is usually fine), then click Next . Accept the License Agreement and click Install . Step 3: Complete the Setup Wizard

Version 1.4.08 is often cited in the "modding" community as a stable build for older and mid-range Android devices.

: Windows 7, 8, 8.1, 10, or 11 (Both 32-bit and 64-bit architectures are supported).

If your phone still fails to connect after installing qcommtk-driver-setup-1.4.08 , check these common system points: