Hard Brick LS990 (No Recovery, No Download, No fastboot) Only LG logo bootloop

Hi Guys,

I need your help i was flashing and update wen the phone turn off and only shows up LG logo over and over, I can't enter any option like bootloader, fastboot, recovery, download modes...

I try too use LGFLASHTOOL but shows up that cant confirm model number and the proceed stops,

I reead some info about quallcom short pin proceed, but i can't find any more info about this, or any other options ???