: Opening the device and tampering with the motherboard will void your manufacturer's warranty.
If a firmware update fails, if you flash the wrong file, or if the device is stuck in a bootloop or shows a black screen (QHSUSB_BULK in Device Manager), the test point is your lifeline. It forces the phone into a mode where you can reflash the entire firmware. lg k52 test point
Unfortunately, LG does not label them clearly. You may need to search for “LG K52 test point image” in repair forums (like GSM-Forum, ChinaPhone, or XDA Developers) where users post high-resolution photos. : Opening the device and tampering with the
