Alex had a customer’s LG K41S (model LM-K410) that wouldn’t turn on. No download mode, no recovery, no sign of life when connected to a PC—just a dead screen and a faint vibration if the battery was pressed. The motherboard was fine; the problem was a corrupted bootloader partition.
Use MTK Meta Mode via UART or force BROM mode by shorting CLK to GND for 2 seconds during power-on. With ISP, you can bypass this by writing a patched preloader with SLA disabled. Look for preloader_mt6762_LMK410hm.bin from custom sources. lg k41s isp pinout