eMMC adapter is a hardware adapter. You connect your eMMC IC from phone to this adapter and write default dump or firmware (many tools support unpack and write kdz format) in your eMMC. In this phone model Jtag is disabled and you can't restore with Jtag.
It's not asking password, but I've try it and it stays on the LG logo for a few seconds, then the display is dark and then showing the LG logo again, it's keep doing this just like bootloop. But if I press the power on only, it stays on the LG logo. Do you think I should do the test point reset?
What are these "Unknow" version? I accidentally flash my vs990 with one of these and can't get pass the logo display. And when doing the test point to flash it with QFIL, it's returning error. Before this, I flash it with QFIL smoothly. Probably it's better to not displaying these "Unknow" ?