This means the tweezers did not make proper contact with the test pad, or they slipped when you plugged in the USB cable. Disconnect the cable, remove the battery connector to reset the board, and try again.
Only when these fail should you proceed to the test point.
Ensure you are using the correct MTK VCOM drivers. Conclusion lg k52 test point
Modern smartphones are designed with layers of security and proprietary bootloaders that prevent unauthorized software modifications. While these protections are essential for user privacy, they can become a barrier when a device "bricks" or enters a boot loop due to a failed update or software glitch. When the standard operating system and even the recovery partition are unresponsive, the hardware test point provides a way to communicate directly with the chipset's boot ROM. By physically shorting a specific pad to ground, a technician can override the standard boot sequence and force the device into a state where new firmware can be flashed or security locks can be bypassed.
Repairing soft-bricked or hard-bricked devices (stuck at logo, no power, black screen). This means the tweezers did not make proper
If done correctly, the computer will detect the device as MediaTek USB Port or Preloader USB VCOM in the Device Manager. Release the tweezers once the connection is made. Phase 3: Flashing/Unbricking Load your stock firmware scatter file into the flash tool. Select "Download" or "Flash" to start the process. Do not disconnect the cable until the flashing is complete. Safety Precautions
If you are an LG K52 user facing a hard brick, a bootloop, or you need to bypass the FRP (Factory Reset Protection) lock, standard flashing methods via LGUP often fail if the device cannot boot into the standard Download Mode. Ensure you are using the correct MTK VCOM drivers
FRP is a security feature introduced with Android 5.0 Lollipop. After a factory reset performed outside of the settings menu (e.g., via recovery mode), the phone will ask for the previous Google account credentials. If you forgot the email/password, the device is locked. While some LG models have software FRP bypass methods, updates often patch them. The test point method allows you to rewrite the security partition directly.