Power the board via battery, not via the programmer's VCC. Use 1.8V logic level. This setup will successfully revive dead boot devices or extract user data from a non-booting phone.
for EMMC/UFS memory instead of trying to solder to tiny, unverified ISP points on the board. lg k41s isp pinout new
Perform this at your own risk. Improper soldering or incorrect voltage can destroy the motherboard. Power the board via battery, not via the programmer's VCC