As far as I remember U8210 is Qualcomm based and there is no test point. If phone is totally dead and can't connect to USB pressing 2+5 then I think its bricked.
Thank for reply, i try to solve other lg whit test point connection type 8120 8330 ect, but for 8210 can't find tp in the forum , 8210 pcb is similar other model lg phone?