, you must solder to these specific points on the motherboard: CLK (Clock) CMD (Command) D0 (Data 0) GND (Ground) VCC (2.8V) VCCQ (1.8V)
Even with the correct pinout, you may hit issues. Here are the "better" fixes: lg k41s isp pinout better
Many online guides mistakenly point to a 1.8V test point near the PMIC as VCCQ. This point collapses under load. The better method uses the for voltage measurement only, not for powering the eMMC. , you must solder to these specific points