: Use a pair of tweezers to short the designated test point pin to a ground (any metal shielding or the SIM tray) while connecting the device to a computer via USB.
Power off the LG K41s completely. Use a heat gun or hairdryer to soften the adhesive along the edges of the back cover. Carefully insert a plastic spudger to pry off the rear shell. The K41s has a removable back cover, but it is clipped tightly. Lg K41s Frp Test Point